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Can Firewalls Be Hacked? Yes, Here’s 6 Vulnerabilities Like all security tools, firewalls can be hacked. That’s what happened to the... Cyber Attacks & Incident Response Can Firewalls Be Hacked? Yes, Here’s 6 Vulnerabilities Tsippi Dach 2 min read Tsippi Dach Short bio about author here Lorem ipsum dolor sit amet consectetur. Vitae donec tincidunt elementum quam laoreet duis sit enim. Duis mattis velit sit leo diam. Tags Share this article 12/20/23 Published Can Firewalls Be Hacked? Yes, Here’s 6 Vulnerabilities Like all security tools, firewalls can be hacked. That’s what happened to the social media platform X in January 2023, when it was still Twitter. Hackers exploited an API vulnerability that had been exposed since June the previous year. This gave them access to the platform’s security system and allowed them to leak sensitive information on millions of users. This breach occurred because the organization’s firewalls were not configured to examine API traffic with enough scrutiny. This failure in firewall protection led to the leak of more than 200 million names, email addresses, and usernames, along with other information, putting victims at risk of identity theft . Firewalls are your organization’s first line of defense against malware and data breaches. They inspect all traffic traveling into and out of your network, looking for signs of cyber attacks and blocking malicious activity when they find it. This makes them an important part of every organization’s cybersecurity strategy. Effective firewall management and configuration is vital for preventing cybercrime. Read on to find out how you can protect your organization from attacks that exploit firewall vulnerabilities you may not be aware of. Understanding the 4 Types of Firewalls The first thing every executive and IT leader should know is that there are four basic types of firewalls . Each category offers a different level of protection, with simpler solutions costing less than more advanced ones. Most organizations need to use some combination of these four firewall types to protect sensitive data effectively. Keep in mind that buying more advanced firewalls is not always the answer. Optimal firewall management usually means deploying the right type of firewall for its particular use case. Ideally, these should be implemented alongside multi-layered network security solutions that include network detection and response, endpoint security, and security information and event management (SIEM) technology. 1. Packet Filtering Firewalls These are the oldest and most basic types of firewalls. They operate at the network layer, checking individual data packets for their source IP address and destination IP. They also verify the connection protocol, as well as the source port and destination port against predefined rules. The firewall drops packets that fail to meet these standards, protecting the network from potentially harmful threats. Packet filtering firewalls are among the fastest and cheapest types of firewalls available. Since they can not inspect the contents of data packets, they offer minimal functionality. They also can’t keep track of established connections or enforce rules that rely on knowledge of network connection states. This is why they are considered stateless firewalls. 2. Stateful Inspection Firewalls These firewalls also perform packet inspection, but they ingest more information about the traffic they inspect and compare that information against a list of established connections and network states. Stateful inspection firewalls work by creating a table that contains the IP and port data for traffic sources and destinations, and dynamically check whether data packets are part of a verified active connection. This approach allows stateful inspection firewalls to deny data packets that do not belong to a verified connection. However, the process of checking data packets against the state table consumes system resources and slows down traffic. This makes stateful inspection firewalls vulnerable to Distributed Denial-of-Service (DDoS) attacks. 3. Application Layer Gateways These firewalls operate at the application layer, inspecting and managing traffic based on specific applications or protocols, providing deep packet inspection and content filtering. They are also known as proxy firewalls because they can be implemented at the application layer through a proxy device. In practice, this means that an external client trying to access your system has to send a request to the proxy firewall first. The firewall verifies the authenticity of the request and forwards it to an internal server. They can also work the other way around, providing internal users with access to external resources (like public web pages) without exposing the identity or location of the internal device used. 4. Next-Generation Firewalls (NGFW) Next-generation firewalls combine traditional firewall functions with advanced features such as intrusion prevention, antivirus, and application awareness . They contextualize data packet flows and enrich them with additional data, providing comprehensive security against a wide range of threats. Instead of relying exclusively on IP addresses and port information, NGFWs can perform identity-based monitoring of individual users, applications, and assets. For example, a properly configured NGFW can follow a single user’s network traffic across multiple devices and operating systems, providing an activity timeline even if the user switches between a desktop computer running Microsoft Windows and an Amazon AWS instance controlling routers and iOT devices. How Do These Firewalls Function? Each type of firewall has a unique set of functions that serve to improve the organization’s security posture and prevent hackers from carrying out malicious cyber attacks. Optimizing your firewall fleet means deploying the right type of solution for each particular use case throughout your network. Some of the most valuable functions that firewalls perform include: Traffic Control They regulate incoming and outgoing traffic, ensuring that only legitimate and authorized data flows through the network. This is especially helpful in cases where large volumes of automated traffic can slow down routine operations and disrupt operations. For example, many modern firewalls include rules designed to deny bot traffic. Some non-human traffic is harmless, like the search engine crawlers that determine your website’s ranking against certain keyword searches. However, the vast majority of bot traffic is either unnecessary or malicious. Firewalls can help you keep your infrastructure costs down by filtering out connection attempts from automated sources you don’t trust. Protection Against Cyber Threats Firewalls act as a shield against various cyber threats, including phishing attacks, malware and ransomware attacks . Since they are your first line of defense, any malicious activity that targets your organization will have to bypass your firewall first. Hackers know this, which is why they spend a great deal of time and effort finding ways to bypass firewall protection. They can do this by exploiting technical vulnerabilities in your firewall devices or by hiding their activities in legitimate traffic. For example, many firewalls do not inspect authenticated connections from trusted users. If cybercriminals learn your login credentials and use your authenticated account to conduct an attack, your firewalls may not notice the malicious activity at all. Network Segmentation By defining access rules, firewalls can segment networks into zones with varying levels of trust, limiting lateral movement for attackers. This effectively isolates cybercriminals into the zone they originally infiltrated, and increases the chance they make a mistake and reveal themselves trying to access additional assets throughout your network. Network segmentation is an important aspect of the Zero Trust framework. Firewalls can help reinforce the Zero Trust approach by inspecting traffic traveling between internal networks and dropping connections that fail to authenticate themselves. Security Policy Enforcement Firewalls enforce security policies, ensuring that organizations comply with their security standards and regulatory requirements. Security frameworks like NIST , ISO 27001/27002 , and CIS specify policies and controls that organizations need to implement in order to achieve compliance. Many of these frameworks stipulate firewall controls and features that require organizations to invest in optimizing their deployments. They also include foundational and organizational controls where firewalls play a supporting role, contributing to a stronger multi-layered cybersecurity strategy. Intrusion Detection and Prevention Advanced firewalls include intrusion detection and prevention capabilities, which can identify and block suspicious activities in real-time. This allows security teams to automate their response to some of the high-volume security events that would otherwise drag down performance . Automatically detecting and blocking known exploits frees IT staff to spend more time on high-impact strategic work that can boost the organization’s security posture. Logging and Reporting Firewalls generate logs and reports that assist in security analysis, incident response, and compliance reporting. These logs provide in-depth data on who accessed the organization’s IT assets, and when the connection occurred. They enable security teams to conduct forensic investigations into security incidents, driving security performance and generating valuable insights into the organization’s real-world security risk profile. Organizations that want to implement SIEM technology must also connect their firewall devices to the platform and configure them to send log data to their SIEM for centralized analysis. This gives security teams visibility into the entire organization’s attack surface and enables them to adopt a Zero Trust approach to managing log traffic. Common Vulnerabilities & Weaknesses Firewalls Share Firewalls are crucial for network security, but they are not immune to vulnerabilities. Common weaknesses most firewall solutions share include: Zero-day vulnerabilities These are vulnerabilities in firewall software or hardware that are unknown to the vendor or the general public. Attackers can exploit them before patches or updates are available, making zero-day attacks highly effective. Highly advanced NGFW solutions can protect against zero-day attacks by inspecting behavioral data and using AI-enriched analysis to detect unknown threats. Backdoors Backdoors are secret entry points left by developers or attackers within a firewall’s code. These hidden access points can be exploited to bypass security measures. Security teams must continuously verify their firewall configurations to identify the signs of backdoor attacks. Robust and effective change management solutions help prevent backdoors from remaining hidden. Header manipulation Attackers may manipulate packet headers to trick firewalls into allowing unauthorized traffic or obscuring their malicious intent. There are multiple ways to manipulate the “Host” header in HTTP traffic to execute attacks. Security teams need to configure their firewalls and servers to validate incoming HTTP traffic and limit exposure to header vulnerabilities. How Cyber Criminals Exploit These Vulnerabilities Unauthorized Access Exploiting a vulnerability can allow cybercriminals to penetrate a network firewall, gaining access to sensitive data, proprietary information, or critical systems. Once hackers gain unauthorized access to a network asset, only a well-segmented network operating on Zero Trust principles can reliably force them to reveal themselves. Otherwise, they will probably remain hidden until they launch an active attack. Data Breaches Once inside your network, attackers may exfiltrate sensitive information, including customer data, intellectual property, and financial records (like credit cards), leading to data breaches. These complex security incidents can lead to major business disruptions and reputational damage, as well as enormous recovery costs. Malware Distribution Attackers may use compromised firewalls to distribute malware, ransomware, or malicious payloads to other devices within the network. This type of attack may focus on exploiting your systems and network assets, or it may target networks adjacent to your own – like your third-party vendors, affiliate partners, or customers. Denial of Service (DDoS) Exploited firewalls can be used in DDoS attacks, potentially disrupting network services and rendering them unavailable to users. This leads to expensive downtime and reputational damage. Some hackers try to extort their victims directly, demanding organizations pay money to stop the attack. 6 Techniques Used to Bypass Firewalls 1. Malware and Payload Delivery Attackers use malicious software and payloads to exploit firewall vulnerabilities, allowing them to infiltrate networks or systems undetected. This often occurs due to unpatched security vulnerabilities in popular firewall operating systems. For example, in June 2023 Fortinet addressed a critical-severity FortiOS vulnerability with a security patch. One month later in July, there were still 300,000 Fortinet firewalls still using the unpatched operating system. 2. Phishing Attacks Phishing involves tricking individuals into divulging sensitive information or executing malicious actions. Attackers use deceptive emails or websites that may bypass firewall filters. If they gain access to privileged user account credentials, they may be able to bypass firewall policies entirely, or even reconfigure firewalls themselves. 3. Social Engineering Tactics Cybercriminals manipulate human psychology to deceive individuals into disclosing confidential information, effectively bypassing technical security measures like firewalls. This is typically done through social media, email, or by telephone. Attackers may impersonate authority figures both inside and outside the organization and demand access to sensitive assets without going through the appropriate security checks. 4. Deep Packet Inspection Evasion Attackers employ techniques to disguise malicious traffic, making it appear benign to firewalls using deep packet inspection, allowing it to pass through undetected. Some open-source tools like SymTCP can achieve this by running symbolic executions on the server’s TCP implementation, scanning the resulting execution paths, and sending malicious data through any handling discrepancies identified. 5. VPNs and Remote Access Attackers may use Virtual Private Networks (VPNs) and remote access methods to circumvent firewall restrictions and gain unauthorized entry into networks. This is particularly easy in cases where simple geo restrictions block traffic from IP addresses associated with certain countries or regions. Attackers may also use more sophisticated versions of this technique to access exposed services that don’t require authentication, like certain containerized servers . 6. Intrusion Prevention Systems (IPS) Bypass Sophisticated attackers attempt to evade IPS systems by crafting traffic patterns or attacks that go undetected, enabling them to compromise network security. For example, they may use technologies to decode remote access tool executable files hidden inside certificate files, allowing them to reassemble the malicious file after it passes through the IPS. Protecting Against Firewall Vulnerabilities Multi-factor Authentication (MFA) MFA adds an extra layer of security by requiring users to provide multiple forms of identification, such as a password and a one-time code sent to their mobile device, before they gain access. This prevents attackers from accessing sensitive network assets immediately after stealing privileged login credentials. Knowing an account holder’s password and username is not enough. Two-factor Authentication (2FA) 2FA is a subset of MFA that involves using two authentication factors, typically something the user knows (password) and something the user has (a mobile device or security token), to verify identity and enhance firewall security. Other versions use biometrics like fingerprint scanning to authenticate the user. Intrusion Prevention Systems (IPS) IPS solutions work alongside firewalls to actively monitor network traffic for suspicious activity and known attack patterns, helping to block or mitigate threats before they can breach the network. These systems significantly reduce the amount of manual effort that goes into detecting and blocking known malicious attack techniques. Web Application Firewalls (WAF) WAFs are specialized firewalls designed to protect web applications from a wide range of threats, including SQL injection, cross-site scripting (XSS), and other web-based attacks. Since these firewalls focus specifically on HTTP traffic, they are a type of application level gateway designed specifically for web applications that interact with users on the public internet. Antivirus Software and Anti-malware Tools Deploying up-to-date antivirus and anti-malware software on endpoints, servers, and Wi-Fi network routers helps detect and remove malicious software, reducing the risk of firewall compromise. In order to work effectively, these tools must be configured to detect and mitigate the latest threats alongside the organization’s other security tools and firewalls. Automated solutions can help terminate unauthorized processes before attackers get a chance to deliver malicious payloads. Regular Updates and Patch Management Keeping firewalls and all associated software up-to-date with the latest security patches and firmware updates is essential for addressing known vulnerabilities and ensuring optimal security. Security teams should know when configuration changes are taking place, and be equipped to respond quickly when unauthorized changes take place. Implementing a comprehensive visibility and change management platform like AlgoSec makes this possible. With AlgoSec, you can simulate the effects of network configuration changes and proactively defend against sophisticated threats before attackers have a chance to strike. Monitoring Network Traffic for Anomalies Continuous monitoring of network traffic helps identify unusual patterns or behaviors that may indicate a security incident. Anomalies can trigger alerts for further investigation and response. Network detection and response solutions grant visibility into network activities that would otherwise go unnoticed, potentially giving security personnel early warning when unannounced changes or suspicious behaviors take place. Streamline Your Firewall Security With AlgoSec Organizations continue to face increasingly sophisticated cyber threats, including attacks that capitalize on misconfigured firewalls – or manipulate firewall configurations directly. Firewall management software has become a valuable tool for maintaining a robust network security posture and ensuring regulatory compliance. AlgoSec plays a vital role enhancing firewall security by automating policy analysis, optimizing rule sets, streamlining change management, and providing real-time monitoring and visibility. Find out how to make the most of your firewall deployment and detect unauthorized changes to firewall configurations with our help. Schedule a demo Related Articles Q1 at AlgoSec: What innovations and milestones defined our start to 2026? AlgoSec Reviews Mar 19, 2023 · 2 min read 2025 in review: What innovations and milestones defined AlgoSec’s transformative year in 2025? AlgoSec Reviews Mar 19, 2023 · 2 min read Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read Speak to one of our experts Speak to one of our experts Work email* First name* Last name* Company* country* Select country... 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Discover key insights on cloud network security, its benefits, challenges, and best practices for protecting your cloud environment effectively. Cloud network security: Challenges and best practices ---- ------- Schedule a Demo Select a size ----- Get the latest insights from the experts 6 best practices to stay secure in the hybrid cloud Read more The enterprise guide to hybrid network management Read more Multi-Cloud Security Network Policy and Configuration Management Read more Choose a better way to manage your network

Webinars Firewall Rule Recertification - An Application-Centric Approach As part of your organization’s security policy management best practices, firewall rules must be reviewed and recertified regularly to ensure security, compliance and optimal firewall performance. Firewall rules which are out of date, unused or unnecessary should be removed, as firewall bloat creates gaps in your security posture, causes compliance violations, and impacts firewall performance. Manual firewall rule recertification, however, is an error-prone and time-consuming process. Please join our webinar by Asher Benbenisty, AlgoSec’s Director of Product Marketing, who will introduce an application-centric approach to firewall recertification, bringing a new, efficient, effective and automated method of recertifying firewall rules. The webinar will: Why it is important to regularly review and recertify your firewall rules The application-centric approach to firewall rule recertification How to automatically manage the rule-recertification process Want to find out more about the importance of ruleset hygiene? Watch this webinar today! Asher Benbenisty Director of product marketing Relevant resources Tips for Firewall Rule Recertification Watch Video Firewall Rule Recertification Read Document Choose a better way to manage your network Choose a better way to manage your network Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue

Application outages caused by human error can be a nightmare for businesses, leading to financial losses, customer dissatisfaction, and... Cyber Attacks & Incident Response Resolving human error in application outages: strategies for success Malynnda Littky-Porath 2 min read Malynnda Littky-Porath Short bio about author here Lorem ipsum dolor sit amet consectetur. Vitae donec tincidunt elementum quam laoreet duis sit enim. Duis mattis velit sit leo diam. Tags Share this article 3/18/24 Published Application outages caused by human error can be a nightmare for businesses, leading to financial losses, customer dissatisfaction, and reputational damage. While human error is inevitable, organizations can implement effective strategies to minimize its impact and resolve outages promptly. In this blog post, we will explore proven solutions for addressing human error in application outages, empowering businesses to enhance their operational resilience and deliver uninterrupted services to their customers. Organizations must emphasize training and education One of the most crucial steps in resolving human error in application outages is investing in comprehensive training and education for IT staff. By ensuring that employees have the necessary skills, knowledge, and understanding of the application environment, organizations can reduce the likelihood of errors occurring. Training should cover proper configuration management, system monitoring, troubleshooting techniques, and incident response protocols. Additionally, fostering a culture of continuous learning and improvement is essential. Encourage employees to stay up to date with the latest technologies, best practices, and industry trends through workshops, conferences, and online courses. Regular knowledge sharing sessions and cross-team collaborations can also help mitigate human errors by fostering a culture of accountability and knowledge transfer. It’s time to implement robust change management processes Implementing rigorous change management processes is vital for preventing human errors that lead to application outages. Establishing a standardized change management framework ensures that all modifications to the application environment go through a well-defined process, reducing the risk of inadvertent errors. The change management process should include proper documentation of proposed changes, a thorough impact analysis, and rigorous testing in non-production environments before deploying changes to the production environment. Additionally, maintaining a change log and conducting post-implementation reviews can provide valuable insights for identifying and rectifying any potential errors. Why automate and orchestrate operational tasks Human errors often occur due to repetitive, mundane tasks that are prone to oversight or mistakes. Automating and orchestrating operational tasks can significantly reduce human error in application outages. Organizations should leverage automation tools to streamline routine tasks such as provisioning, configuration management, and deployment processes. By removing the manual element, the risk of human error decreases, and the consistency and accuracy of these tasks improve. Furthermore, implementing orchestration tools allows for the coordination and synchronization of complex workflows involving multiple teams and systems. This reduces the likelihood of miscommunication and enhances collaboration, minimizing errors caused by lack of coordination. Establish effective monitoring and alerting mechanisms Proactive monitoring and timely alerts are crucial for identifying potential issues and resolving them before they escalate into outages. Implementing robust monitoring systems that capture key performance indicators, system metrics, and application logs enables IT teams to quickly identify anomalies and take corrective action. Additionally, setting up alerts and notifications for critical events ensures that the appropriate personnel are notified promptly, allowing for rapid response and resolution. Leveraging artificial intelligence and machine learning capabilities can enhance monitoring by detecting patterns and anomalies that human operators might miss. Human errors will always be a factor in application outages, but by implementing effective strategies, organizations can minimize their impact and resolve incidents promptly. Investing in comprehensive training, robust change management processes, automation and orchestration, and proactive monitoring can significantly reduce the likelihood of human error-related outages. By prioritizing these solutions and fostering a culture of continuous improvement, businesses can enhance their operational resilience, protect their reputation, and deliver uninterrupted services to their customers. Schedule a demo Related Articles Q1 at AlgoSec: What innovations and milestones defined our start to 2026? AlgoSec Reviews Mar 19, 2023 · 2 min read 2025 in review: What innovations and milestones defined AlgoSec’s transformative year in 2025? AlgoSec Reviews Mar 19, 2023 · 2 min read Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read Speak to one of our experts Speak to one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Schedule a call

Master the full vulnerability management lifecycle by learning how to prioritize risks to harden your infrastructure against modern threats, and how to choose the ideal vulnerability management tool. Vulnerability management Select a size Which network Can AlgoSec be used for continuous compliance monitoring? Yes, AlgoSec supports continuous compliance monitoring. As organizations adapt their security policies to meet emerging threats and address new vulnerabilities, they must constantly verify these changes against the compliance frameworks they subscribe to. AlgoSec can generate risk assessment reports and conduct internal audits on-demand, allowing compliance officers to monitor compliance performance in real-time. Security professionals can also use AlgoSec to preview and simulate proposed changes to the organization’s security policies. This gives compliance officers a valuable degree of lead-time before planned changes impact regulatory guidelines and allows for continuous real-time monitoring. What is vulnerability management? Vulnerability management (VM) is the continuous, systematic process of identifying, evaluating, reporting, and remediating vulnerabilities existing in cyber assets, processes, endpoints, and systems. Adversaries are constantly scanning for exploitable gaps, making vulnerability management an ongoing discipline that helps organizations recognize and fix these gaps before adversaries find and weaponize them. The global average cost of a data breach stands at $4.44 million , per IBM’s 2025 report. This includes disruptions, loss of customer trust, and regulatory fines, making proper vulnerability management critical. Vulnerability management vs. patch management: Are they the same? No. Patch management involves the deployment of a solution, such as a software update, to fix a vulnerability. Vulnerability management , on the other hand, encompasses the broader process of identifying, assessing, and addressing all categories of vulnerabilities through diverse strategies. The strategic benefits of vulnerability management Effective vulnerability management brings numerous benefits: Improved asset visibility. Unified visibility across business applications and endpoints creates a baseline for capacity planning, license management, and technology refresh cycles. Fewer security risks. VM also directly reduces the probability of successful cyberattacks by systematically identifying and addressing exploitable weaknesses. Enhanced operational efficiency. Mature vulnerability management programs establish structured processes for security remediation, replacing ad hoc firefighting with systematic resolution workflows. Prevention of business disruption. The financial hit of a breach doesn’t stop at ransom payments. Operational disruption, reputational damage, customer attrition, and regulatory penalties often dwarf the costs of immediate incident response (IR). Support for compliance and audit requirements. From PCI-DSS to HIPAA, regulatory requirements mandate regular vulnerability assessments, including documented vulnerability management processes and evidence of continuous improvement. What are the types of managed vulnerabilities? Vulnerabilities manifest across diverse technical domains, with multiple types requiring specialized assessment approaches and remediation strategies: Software vulnerabilities : These bugs in application code, operating systems, firmware, or supporting libraries remain the most prevalent, particularly as complex application portfolios span legacy systems, commercial off-the-shelf products, and custom-developed code. Hardware vulnerabilities : These exist within the physical components and embedded firmware of computing devices and are especially relevant for on-premises infrastructure, which can be locally exploited. Network vulnerabilities: Arising from misconfigurations, design flaws, or network infrastructure and protocol weaknesses, network vulnerabilities often serve as force multipliers, allowing attackers who gain initial access to expand their presence across your entire environment. Process vulnerabilities : Weaknesses in operational procedures, change management practices, and organizational workflows are human and procedural gaps that can be as consequential as technical weaknesses. Control vulnerabilities: Encompassing weaknesses in security mechanisms themselves, i.e., the systems designed to prevent, detect, or respond to threats, this type of vulnerability includes: Inadequately tuned intrusion detection systems that generate false negatives Logging configurations that fail to capture security-relevant events Backup processes that cannot support timely recovery Incident response procedures that prove inadequate during actual crises Mixed vulnerabilities: These represent complex weaknesses that span multiple categories, requiring coordinated remediation across technical domains. How does vulnerability management work? An effective vulnerability management process has overlapping phases that feed insights from one stage into another. This cyclical approach helps ensure that the process matures over time by incorporating lessons learned from one stage into another. The five steps involved in the vulnerability management process are discovery, prioritization, resolution, verification, and reporting. Step 1: Discovery Discovery lays the foundation for effective vulnerability management. It encompasses the identification of vulnerable assets and data flows using scanners, agents, or pen tests: Vulnerability scanners: Scan infrastructure for vulnerabilities present in the CVE database; classified into what they scan and how they scan, i.e., network-based , host-based, or web-based Agent-based scans: Scan endpoints, servers, and workstations using lightweight software agents to identify vulnerabilities missed by external scanners, e.g., local privilege escalation, insecure configurations in applications that don't expose network services, and compliance violations in endpoint security controls Penetration tests: Employ white-hat hackers to identify vulnerabilities; more resource-intensive than agents but can uncover complex weaknesses scanners miss, plus validate the exploitability of found vulnerabilities The next phase involves making sure the right vulnerabilities receive attention first. Step 2: Prioritization A common vulnerability prioritization approach uses the Common Vulnerability Scoring System (CVSS). CVSS provides severity ratings based on technical characteristics, for example, potential impact, attack complexity, or privileges needed. A CVSS score of zero indicates the lowest possible severity, while 10 is the highest. However, CVSS scores don't account for asset criticality and threat context, making these scores alone insufficient for business risk prioritization. For this, the Exploit Prediction Scoring System (EPSS) helps by augmenting CVSS with an assessment of how likely a vulnerability will be exploited within the next 30 days. Still, effective vulnerability prioritization extends beyond scoring systems. The business context is also important. So, instead of solely prioritizing vulnerabilities based on their severity scores or the likelihood of exploitation, organizations must pause and ask: Is my business at risk? If yes, what applications are at risk, and how will their exploitation affect business operations? Of course, there is then the task of successfully resolving vulnerabilities found. Step 3: Resolution Vulnerability resolution can follow three possible paths: remediation, mitigation, or containment. And sometimes, a mix of all three. Remediation Remediation involves eliminating a vulnerability from the source via patch application, version upgrades, or configuration corrections. Although this is the ideal resolution approach, it isn't always immediately feasible. Why? An organization’s legacy systems may lack vendor support, while critical applications may also require extensive testing before patching. Mitigation Mitigation reduces risk exposure in the event of actual exploitation. Example techniques for this approach to vulnerability resolution include network segmentation, firewalls that filter exploit attempts, and enhanced monitoring to provide early warning of exploitation attempts. Containment Containment isolates vulnerable systems from healthy ones while remediation measures are developed and deployed. This approach proves particularly valuable when actively exploited vulnerabilities affect critical systems that cannot be patched immediately. Step 4: Verification Verification confirms that your previous resolution efforts successfully addressed the identified vulnerabilities without introducing operational problems . This ensures CISOs and the rest of the C-suite that holes believed to be plugged are not, in fact, still leaking. A common way to verify resolution is to conduct post-remediation scans or even pen testing for vulnerabilities involving multiple systems. Verification also includes operational validation to check that security fixes haven't degraded system functionality or user experience. If this step reveals incomplete fixes or any new issues caused during resolution, the next step is a root cause analysis to identify gaps in scanning, remediation procedures, testing protocols, or change management processes. Step 5: Reporting CISOs rely on two metrics to reveal gaps in vulnerability management workflows and provide objective measures of program maturity: Mean time to detect (MTTD): Measures the speed of identification of new vulnerabilities Mean time to remediate (MTTR): Quantifies the average duration between vulnerability detection and successful resolution With the right tools, companies can typically achieve MTTD in hours and MTTR in days for critical vulnerabilities, instead of weeks or months. This highlights that an organization’s choice of solution is a key part of the vulnerability management process. What to look for in vulnerability management tools When evaluating vulnerability management solutions, prioritize tools with the following capabilities. Comprehensive visibility across hybrid environments The ideal tool should discover and assess your assets regardless of where they’re hosted—on-prem, multiple cloud platforms, remote endpoints, or containerized workloads. To check the tool’s ability to comprehensively discover assets, ask the following questions: Does the solution natively integrate with CSPs’ APIs? Does it support diverse operating systems? Can it assess both traditional and modern infra? Risk contextualization through embedded threat intelligence For the sake of your business, tools that use generic severity scores are inadequate. Opt for a solution that: Layers your business context onto technical risk Considers asset criticality within the context of your industry Understands the data sensitivity requirements of your organization The result of opting for such a solution is vulnerability prioritization that reflects genuine business risk rather than theoretical severity. Streamlined workflow integration The ideal vulnerability tool should naturally integrate with your existing operational workflows instead of creating parallel shadow processes. The integration should be smooth and easy, as integration difficulties can significantly reduce your ROI from vulnerability management. Actionable reporting for diverse audiences It’s a best practice to choose a solution that provides relevant, easy-to-understand, and easy-to-apply security reports. This allows your security team to immediately understand what steps to take next. Automated change management with rapid response The best solutions incorporate automation to accelerate every phase of the vulnerability management lifecycle. This shortens MTTD and MTTR, and improves your overall security posture. Manage your vulnerabilities with AppViz AlgoSec AppViz delivers business-specific value by prioritizing a detected vulnerability risk not only by severity but also by business criticality. This helps you: Focus on the most important vulnerabilities first Contextualize your risk reduction efforts within a business application perspective Also, in your on-prem and cloud environment, AppViz incorporates data about your exposure level into risky firewall rules and into the what-if risk check analysis report you'll get periodically. Ready to prioritize vulnerabilities based on your business operations and automate the isolation of infected servers? Schedule a demo of AlgoSec to see how. 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Enterprise cybersecurity must constantly evolve to meet the threat posed by new malware variants and increasingly sophisticated hacker... Uncategorized Network Security vs. Application Security: The Complete Guide Tsippi Dach 2 min read Tsippi Dach Short bio about author here Lorem ipsum dolor sit amet consectetur. Vitae donec tincidunt elementum quam laoreet duis sit enim. Duis mattis velit sit leo diam. Tags Share this article 1/25/24 Published Enterprise cybersecurity must constantly evolve to meet the threat posed by new malware variants and increasingly sophisticated hacker tactics, techniques, and procedures. This need drives the way security professionals categorize different technologies and approaches. The difference between network security and application security is an excellent example. These two components of the enterprise IT environment must be treated separately in any modern cybersecurity framework. This is because they operate on different levels of the network and they are exposed to different types of threats and security issues. To understand why, we need to cover what each category includes and how they contribute to an organization’s overall information security posture. IT leaders and professionals can use this information to their organization’s security posture, boost performance, and improve event outcomes. What is Network Security? Network security focuses on protecting assets located within the network perimeter. These assets include data, devices, systems, and other facilities that enable the organization to pursue its interests — just about anything that has value to the organization can be an asset. This security model worked well in the past, when organizations had a clearly defined network perimeter. Since the attack surface was well understood, security professionals could deploy firewalls, intrusion prevention systems, and secure web gateways directly at the point of connection between the internal network and the public internet. Since most users, devices and applications were located on-site, security leaders had visibility and control over the entire network. This started to change when organizations shifted to cloud computing and remote work, supported by increasingly powerful mobile devices. Now most organizations do not have a clear network perimeter, so the castle-and-moat approach to network security is no longer effective. However, the network security approach isn’t obsolete. It is simply undergoing a process of change, adjusting to smaller, more segmented networks governed by Zero Trust principles and influenced by developments in application security. Key Concepts of Network Security Network security traditionally adopts a castle-and-moat approach, where all security controls exist at the network perimeter. Users who attempt to access the network must authenticate and verify themselves before being allowed to enter. Once they enter, they can freely move between assets, applications, and systems without the need to re-authenticate themselves. In modern, cloud-enabled networks, the approach is less like a castle and more like a university campus. There may be multiple different subnetworks working together, with different security controls based on the value of the assets under protection. In these environments, network security is just one part of a larger, multi-layered security deployment. This approach focuses on protecting IT infrastructure, like routers, firewalls, and network traffic. Each of these components has a unique role to play securing assets inside the network: Firewalls act as filters for network traffic , deciding what traffic is allowed to pass through and denying the rest. Well-configured firewall deployments don’t just protect internal assets from incoming traffic, they also protect against data from leaking outside the network as well. Intrusion Prevention Systems (IPS) are security tools that continuously monitor the network for malicious activity and take action to block unauthorized processes. They may search for known threat signatures, monitor for abnormal network activity, or enforce custom security policies. Virtual Private Networks (VPNs) encrypt traffic between networks and hide users’ IP addresses from the public internet. This is useful for maintaining operational security in a complex network environment because it prevents threat actors from intercepting data in transit. Access control tools allow security leaders to manage who is authorized to access data and resources on the network. Secure access control policies determine which users have permission to access sensitive assets, and the conditions under which that access might be revoked. Why is Network Security Important? Network security tools protect organizations against cyberattacks that target their network infrastructure, and prevent hackers from conducting lateral movement. Many modern network security solutions focus on providing deep visibility into network traffic, so that security teams can identify threat actors who have successfully breached the network perimeter and gained unauthorized access. Network Security Technologies and Strategies Firewalls : These tools guard the perimeters of network infrastructure. Firewalls filter incoming and outgoing traffic to prevent malicious activity. They also play an important role in establishing boundaries between network zones, allowing security teams to carefully monitor users who move between different parts of the network. These devices must be continuously monitored and periodically reconfigured to meet the organization’s changing security needs. VPNs : Secure remote access and IP address confidentiality is an important part of network security. VPNs ensure users do not leak IP data outside the network when connecting to external sources. They also allow remote users to access sensitive assets inside the network even when using unsecured connections, like public Wi-Fi. Zero Trust Models : Access control and network security tools provide validation for network endpoints, including IoT and mobile devices. This allows security teams to re-authenticate network users even when they have already verified their identities and quickly disconnect users who fail these authentication checks. What is Application Security? Application security addresses security threats to public-facing applications, including APIs. These threats may include security misconfigurations, known vulnerabilities, and threat actor exploits. Since these network assets have public-facing connections, they are technically part of the network perimeter — but they do not typically share the same characteristics as traditional network perimeter assets. Unlike network security, application security extends to the development and engineering process that produces individual apps. It governs many of the workflows that developers use when writing code for business contexts. One of the challenges to web application security is the fact that there is no clear and universal definition for what counts as an application. Most user-interactive tools and systems count, especially ones that can process data automatically through API access. However, the broad range of possibilities leads to an enormous number of potential security vulnerabilities and exposures, all of which must be accounted for. Several frameworks and methods exist for achieving this: The OWASP Top Ten is a cybersecurity awareness document that gives developers a broad overview of the most common application vulnerabilities . Organizations that adopt the document give software engineers clear guidance on the kinds of security controls they need to build into the development lifecycle. The Common Weakness Enumeration (CWE) is a long list of software weaknesses known to lead to security issues. The CWE list is prioritized by severity, giving organizations a good starting point for improving application security. Common Vulnerabilities and Exposures (CVE) codes contain extensive information on publicly disclosed security vulnerabilities, including application vulnerabilities. Every vulnerability has its own unique CVE code, which gives developers and security professionals the ability to clearly distinguish them from one another. Key Concepts of Application Security The main focus of application security is maintaining secure environments inside applications and their use cases. It is especially concerned with the security vulnerabilities that arise when web applications are made available for public use. When public internet users can interact with a web application directly, the security risks associated with that application rise significantly. As a result, developers must adopt security best practices into their workflows early in the development process. The core elements of application security include: Source code security, which describes a framework for ensuring the security of the source code that powers web-connected applications. Code reviews and security approvals are a vital part of this process, ensuring that vulnerable code does not get released to the public. Securing the application development lifecycle by creating secure coding guidelines, providing developers with the appropriate resources and training, and creating remediation service-level agreements (SLAs) for application security violations. Web application firewalls, which operate separately from traditional firewalls and exclusively protect public-facing web applications and APIs. Web application firewalls monitor and filter traffic to and from a web source, protecting web applications from security threats wherever they happen to be located. Why is Application Security Important? Application security plays a major role ensuring the confidentiality, integrity, and availability of sensitive data processed by applications. Since public-facing applications often collect and process end-user data, they make easy targets for opportunistic hackers. At the same time, robust application security controls must exist within applications to address security vulnerabilities when they emerge and prevent data breaches. Application Security Technologies Web Application Firewalls. These firewalls provide protection specific to web applications, preventing attackers from conducting SQL injection, cross-site scripting, and denial-of-service attacks, among others. These technical attacks can lead to application instability and leak sensitive information to attackers. Application Security Testing. This important step includes penetration testing, vulnerability scanning, and the use of CWE frameworks. Pentesters and application security teams work together to ensure public-facing web applications and APIs hold up against emerging threats and increasingly sophisticated attacks. App Development Security. Organizations need to incorporate security measures into their application development processes. DevOps security best practices include creating modular, containerized applications uniquely secured against threats regardless of future changes to the IT environment or device operating systems. Integrating Network and Application Security Network and application security are not mutually exclusive areas of expertise. They are two distinct parts of your organization’s overall security posture. Identifying areas where they overlap and finding solutions to common problems will help you optimize your organization’s security capabilities through a unified security approach. Overlapping Areas Network and application security solutions protect distinct areas of the enterprise IT environment, but they do overlap in certain areas. Security leaders should be aware of the risk of over-implementation, or deploying redundant security solutions that do not efficiently improve security outcomes. Security Solutions : Both areas use security tools like intrusion prevention systems, authentication, and encryption. Network security solutions may treat web applications as network entry points, but many hosted web applications are located outside the network perimeter. This makes it difficult to integrate the same tools, policies, and controls uniformly across web application toolsets. Cybersecurity Strategy : Your strategy is an integral part of your organization’s security program, guiding your response to different security threats. Security architects must configure network and application security solutions to work together in use case scenarios where one can meaningfully contribute to the other’s operations. Unique Challenges Successful technology implementations of any kind come with challenges, and security implementations are no different. Both application and network security deployments will present issues that security leaders must be prepared to address. Application security challenges include: Maintaining usability. End users will not appreciate security implementations that make apps harder to use. Security teams need to pay close attention to how new features impact user interfaces and workflows. Detecting vulnerabilities in code. Ensuring all code is 100% free of vulnerabilities is rarely feasible. Instead, organizations need to adopt a proactive approach to detecting vulnerabilities in code and maintaining source code security. Managing source code versioning. Implementing DevSecOps processes can make it hard for organizations to keep track of continuously deployed security updates and integrations. This may require investing in additional toolsets and versioning capabilities. Network security challenges include: Addressing network infrastructure misconfigurations. Many network risks stem from misconfigured firewalls and other security tools. One of the main challenges in network security is proactively identifying these misconfigurations and resolving them before they lead to security incidents. Monitoring network traffic efficiently. Monitoring network traffic can make extensive use of limited resources, leading to performance issues or driving up network-related costs. Security leaders must find ways to gain insight into security issues without raising costs beyond what the organization can afford. Managing network-based security risks effectively. Translating network activity insights into incident response playbooks is not always easy. Simply knowing that unauthorized activity might be happening is not enough. Security teams must also be equipped to address those risks and mitigate potential damage. Integrating Network and Application Security for Unified Protection A robust security posture must contain elements of both network and application security. Public-facing applications must be able to filter out malicious traffic and resist technical attacks, and security teams need comprehensive visibility into network activity and detecting insider threats . This is especially important in cloud-enabled hybrid environments. If your organization uses cloud computing through a variety of public and private cloud vendors, you will need to extend network visibility throughout the hybrid network. Maintaining cloud security requires a combination of network and web application security capable of producing results in a cost-effective way. Highly automated security platforms can help organizations implement proactive security measures that reduce the need to hire specialist internal talent for every configuration and policy change. Enterprise-ready cloud security solutions leverage automation and machine learning to reduce operating costs and improve security performance across the board. Unify Network and Application Security with AlgoSec No organization can adequately protect itself from a wide range of cyber threats without investing in both network and application security. Technology continues to evolve and threat actors will adapt their tactics to exploit new vulnerabilities as they are discovered. Integrating network and application security into a single, unified approach gives security teams the ability to create security policies and incident response plans that address real-world threats more effectively. Network visibility and streamlined change management are vital to achieving this goal. AlgoSec is a security policy management and application connectivity platform that provides in-depth information on both aspects of your security posture. Find out how AlgoSec can help you centralize policy and change management in your network. Schedule a demo Related Articles Q1 at AlgoSec: What innovations and milestones defined our start to 2026? 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Previous Part of the analysis is available here. Next Part of the analysis is available here. Update from 19 December 2020: ‍Prevasio... Cloud Security Sunburst Backdoor, Part II: DGA & The List of Victims Rony Moshkovich 2 min read Rony Moshkovich Short bio about author here Lorem ipsum dolor sit amet consectetur. Vitae donec tincidunt elementum quam laoreet duis sit enim. Duis mattis velit sit leo diam. Tags Share this article 12/17/20 Published Previous Part of the analysis is available here . Next Part of the analysis is available here . Update from 19 December 2020: Prevasio would like to thank Zetalytics for providing us with an updated (larger) list of passive (historic) DNS queries for the domains generated by the malware. As described in the first part of our analysis, the DGA (Domain Generation Algorithm) of the Sunburst backdoor produces a domain name that may look like: fivu4vjamve5vfrtn2huov[.]appsync-api.us-west-2[.]avsvmcloud[.]com The first part of the domain name (before the first dot) consists of a 16-character random string, appended with an encoded computer’s domain name. This is the domain in which the local computer is registered. From the example string above, we can conclude that the encoded computer’s domain starts from the 17th character and up until the dot (highlighted in yellow): fivu4vjamve5vfrt n2huov In order to encode a local computer’s domain name, the malware uses one of 2 simple methods: Method 1 : a substitution table, if the domain name consists of small letters, digits, or special characters ‘-‘, ‘_’, ‘.’ Method 2 : base64 with a custom alphabet, in case of capital letters present in the domain name Method 1 In our example, the encoded domain name is “n2huov” . As it does not have any capital letters, the malware encodes it with a substitution table “rq3gsalt6u1iyfzop572d49bnx8cvmkewhj” . For each character in the domain name, the encoder replaces it with a character located in the substitution table four characters right from the original character. In order to decode the name back, all we have to do is to replace each encoded character with another character, located in the substitution table four characters left from the original character. To illustrate this method, imagine that the original substitution table is printed on a paper strip and then covered with a card with 6 perforated windows. Above each window, there is a sticker note with a number on it, to reflect the order of characters in the word “n2huov” , where ‘n’ is #1, ‘2’ is #2, ‘h’ is #3 and so on: Once the paper strip is pulled by 4 characters right, the perforated windows will reveal a different word underneath the card: “domain” , where ‘d’ is #1, ‘o’ is #2, ‘m’ is #3, etc.: A special case is reserved for such characters as ‘0’ , ‘-‘ , ‘_’ , ‘.’ . These characters are encoded with ‘0’ , followed with a character from the substitution table. An index of that character in the substitution table, divided by 4, provides an index within the string “0_-.” . The following snippet in C# illustrates how an encoded string can be decoded: static string decode_domain( string s) { string table = "rq3gsalt6u1iyfzop572d49bnx8cvmkewhj" ; string result = "" ; for ( int i = 0 ; i < s.Length; i++) { if (s[i] != '0' ) { result += table[(table.IndexOf(s[i]) + table.Length - 4 ) % table.Length]; } else { if (i < s.Length - 1 ) { if (table.Contains(s[i + 1 ])) { result += "0_-." [table.IndexOf(s[i + 1 ]) % 4 ]; } else { break ; } } i++; } } return result; } Method 2 This method is a standard base64 encoder with a custom alphabet “ph2eifo3n5utg1j8d94qrvbmk0sal76c” . Here is a snippet in C# that provides a decoder: public static string FromBase32String( string str) { string table = "ph2eifo3n5utg1j8d94qrvbmk0sal76c" ; int numBytes = str.Length * 5 / 8 ; byte [] bytes = new Byte[numBytes]; int bit_buffer; int currentCharIndex; int bits_in_buffer; if (str.Length < 3 ) { bytes[ 0 ] = ( byte )(table.IndexOf(str[ 0 ]) | table.IndexOf(str[ 1 ]) << 5 ); return System.Text.Encoding.UTF8.GetString(bytes); } bit_buffer = (table.IndexOf(str[ 0 ]) | table.IndexOf(str[ 1 ]) << 5 ); bits_in_buffer = 10 ; currentCharIndex = 2 ; for ( int i = 0 ; i < bytes.Length; i++) { bytes[i] = ( byte )bit_buffer; bit_buffer >>= 8 ; bits_in_buffer -= 8 ; while (bits_in_buffer < 8 && currentCharIndex < str.Length) { bit_buffer |= table.IndexOf(str[currentCharIndex++]) << bits_in_buffer; bits_in_buffer += 5 ; } } return System.Text.Encoding.UTF8.GetString(bytes); } When the malware encodes a domain using Method 2, it prepends the encrypted string with a double zero character: “00” . Following that, extracting a domain part of an encoded domain name (long form) is as simple as: static string get_domain_part( string s) { int i = s.IndexOf( ".appsync-api" ); if (i > 0 ) { s = s.Substring( 0 , i); if (s.Length > 16 ) { return s.Substring( 16 ); } } return "" ; } Once the domain part is extracted, the decoded domain name can be obtained by using Method 1 or Method 2, as explained above: if (domain.StartsWith( "00" )) { decoded = FromBase32String(domain.Substring( 2 )); } else { decoded = decode_domain(domain); } Decrypting the Victims’ Domain Names To see the decoder in action, let’s select 2 lists: List #1 Bambenek Consulting has provided a list of observed hostnames for the DGA domain. List #2 The second list has surfaced in a Paste bin paste , allegedly sourced from Zetalytics / Zonecruncher . NOTE: This list is fairly ‘noisy’, as it has non-decodable domain names. By feeding both lists to our decoder, we can now obtain a list of decoded domains, that could have been generated by the victims of the Sunburst backdoor. DISCLAIMER: It is not clear if the provided lists contain valid domain names that indeed belong to the victims. It is quite possible that the encoded domain names were produced by third-party tools, sandboxes, or by researchers that investigated and analysed the backdoor. The decoded domain names are provided purely as a reverse engineering exercise. The resulting list was manually processed to eliminate noise, and to exclude duplicate entries. Following that, we have made an attempt to map the obtained domain names to the company names, using Google search. Reader’s discretion is advised as such mappings could be inaccurate. Decoded Domain Mapping (Could Be Inaccurate) hgvc.com Hilton Grand Vacations Amerisaf AMERISAFE, Inc. kcpl.com Kansas City Power and Light Company SFBALLET San Francisco Ballet scif.com State Compensation Insurance Fund LOGOSTEC Logostec Ventilação Industrial ARYZTA.C ARYZTA Food Solutions bmrn.com BioMarin Pharmaceutical Inc. AHCCCS.S Arizona Health Care Cost Containment System nnge.org Next Generation Global Education cree.com Cree, Inc (semiconductor products) calsb.org The State Bar of California rbe.sk.ca Regina Public Schools cisco.com Cisco Systems pcsco.com Professional Computer Systems barrie.ca City of Barrie ripta.com Rhode Island Public Transit Authority uncity.dk UN City (Building in Denmark) bisco.int Boambee Industrial Supplies (Bisco) haifa.edu University of Haifa smsnet.pl SMSNET, Poland fcmat.org Fiscal Crisis and Management Assistance Team wiley.com Wiley (publishing) ciena.com Ciena (networking systems) belkin.com Belkin spsd.sk.ca Saskatoon Public Schools pqcorp.com PQ Corporation ftfcu.corp First Tech Federal Credit Union bop.com.pk The Bank of Punjab nvidia.com NVidia insead.org INSEAD (non-profit, private university) usd373.org Newton Public Schools agloan.ads American AgCredit pageaz.gov City of Page jarvis.lab Erich Jarvis Lab ch2news.tv Channel 2 (Israeli TV channel) bgeltd.com Bradford / Hammacher Remote Support Software dsh.ca.gov California Department of State Hospitals dotcomm.org Douglas Omaha Technology Commission sc.pima.gov Arizona Superior Court in Pima County itps.uk.net IT Professional Services, UK moncton.loc City of Moncton acmedctr.ad Alameda Health System csci-va.com Computer Systems Center Incorporated keyano.local Keyano College uis.kent.edu Kent State University alm.brand.dk Sydbank Group (Banking, Denmark) ironform.com Ironform (metal fabrication) corp.ncr.com NCR Corporation ap.serco.com Serco Asia Pacific int.sap.corp SAP mmhs-fla.org Cleveland Clinic Martin Health nswhealth.net NSW Health mixonhill.com Mixon Hill (intelligent transportation systems) bcofsa.com.ar Banco de Formosa ci.dublin.ca. Dublin, City in California siskiyous.edu College of the Siskiyous weioffice.com Walton Family Foundation ecobank.group Ecobank Group (Africa) corp.sana.com Sana Biotechnology med.ds.osd.mi US Gov Information System wz.hasbro.com Hasbro (Toy company) its.iastate.ed Iowa State University amr.corp.intel Intel cds.capilanou. Capilano University e-idsolutions. IDSolutions (video conferencing) helixwater.org Helix Water District detmir-group.r Detsky Mir (Russian children’s retailer) int.lukoil-int LUKOIL (Oil and gas company, Russia) ad.azarthritis Arizona Arthritis and Rheumatology Associates net.vestfor.dk Vestforbrænding allegronet.co. Allegronet (Cloud based services, Israel) us.deloitte.co Deloitte central.pima.g Pima County Government city.kingston. City of Kingston staff.technion Technion – Israel Institute of Technology airquality.org Sacramento Metropolitan Air Quality Management District phabahamas.org Public Hospitals Authority, Caribbean parametrix.com Parametrix (Engineering) ad.checkpoint. Check Point corp.riotinto. Rio Tinto (Mining company, Australia) intra.rakuten. Rakuten us.rwbaird.com Robert W. Baird & Co. (Financial services) ville.terrebonn Ville de Terrebonne woodruff-sawyer Woodruff-Sawyer & Co., Inc. fisherbartoninc Fisher Barton Group banccentral.com BancCentral Financial Services Corp. taylorfarms.com Taylor Fresh Foods neophotonics.co NeoPhotonics (optoelectronic devices) gloucesterva.ne Gloucester County magnoliaisd.loc Magnolia Independent School District zippertubing.co Zippertubing (Manufacturing) milledgeville.l Milledgeville (City in Georgia) digitalreachinc Digital Reach, Inc. deniz.denizbank DenizBank thoughtspot.int ThoughtSpot (Business intelligence) lufkintexas.net Lufkin (City in Texas) digitalsense.co Digital Sense (Cloud Services) wrbaustralia.ad W. R. Berkley Insurance Australia christieclinic. Christie Clinic Telehealth signaturebank.l Signature Bank dufferincounty. Dufferin County mountsinai.hosp Mount Sinai Hospital securview.local Securview Victory (Video Interface technology) weber-kunststof Weber Kunststoftechniek parentpay.local ParentPay (Cashless Payments) europapier.inte Europapier International AG molsoncoors.com Molson Coors Beverage Company fujitsugeneral. Fujitsu General cityofsacramento City of Sacramento ninewellshospita Ninewells Hospital fortsmithlibrary Fort Smith Public Library dokkenengineerin Dokken Engineering vantagedatacente Vantage Data Centers friendshipstateb Friendship State Bank clinicasierravis Clinica Sierra Vista ftsillapachecasi Apache Casino Hotel voceracommunicat Vocera (clinical communications) mutualofomahabanMutual of Omaha Bank Schedule a demo Related Articles Q1 at AlgoSec: What innovations and milestones defined our start to 2026? AlgoSec Reviews Mar 19, 2023 · 2 min read 2025 in review: What innovations and milestones defined AlgoSec’s transformative year in 2025? 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Featured Snippet A cloud security audit is a review of an organization’s cloud security environment. During an audit, the security... Cloud Security What is a Cloud Security Audit? (and How to Conduct One) Rony Moshkovich 2 min read Rony Moshkovich Short bio about author here Lorem ipsum dolor sit amet consectetur. Vitae donec tincidunt elementum quam laoreet duis sit enim. Duis mattis velit sit leo diam. Tags Share this article 6/23/23 Published Featured Snippet A cloud security audit is a review of an organization’s cloud security environment. During an audit, the security auditor will gather information, perform tests, and confirm whether the security posture meets industry standards. PAA: What is the objective of a cloud security audit? The main objective of a cloud security audit is to evaluate the health of your cloud environment, including any data and applications hosted on the cloud. PAA: What are three key areas of auditing in the cloud? From the list of “6 Fundamental Steps of a Cloud Security Audit.” Inspect the security posture Determine the attack surface Implement strict access controls PAA: What are the two types of security audits? Security audits come in two forms: internal and external. In internal audits, a business uses its resources and employees to conduct the investigation. In external audits, a third-party organization is hired to conduct the audit. PAA: How do I become a cloud security auditor? To become a cloud security auditor, you need a certification like the Certificate of Cloud Security Knowledge (CCSK) or Certified Cloud Security Professional (CCSP). Prior experience in IT auditing, cloud security management, and cloud risk assessment is highly beneficial. Cloud environments are used to store over 60 percent of all corporate data as of 2022. With so much data in the cloud, organizations rely on cloud security audits to ensure that cloud services can safely provide on-demand access. In this article, we explain what a cloud security audit is, its main objectives, and its benefits. We’ve also listed the six crucial steps of a cloud audit and a checklist of example actions taken during an audit. What Is a Cloud Security Audit? A cloud security audit is a review of an organization’s cloud security environment . During an audit, the security auditor will gather information, perform tests, and confirm whether the security posture meets industry standards. Cloud service providers (CSPs) offer three main types of services: Software as a Service (SaaS) Infrastructure as a Service (IaaS) Platform as a Service (PaaS) Businesses use these solutions to store data and drive daily operations. A cloud security audit evaluates a CSP’s security and data protection measures. It can help identify and address any risks. The audit assesses how secure, dependable, and reliable a cloud environment is. Cloud audits are an essential data protection measure for companies that store and process data in the cloud. An audit assesses the security controls used by CSPs within the company’s cloud environment. It evaluates the effectiveness of the CSP’s security policies and technical safeguards. Auditors identify vulnerabilities, gaps, or noncompliance with regulations. Addressing these issues can prevent data breaches and exploitation via cybersecurity attacks. Meeting mandatory compliance standards will also prevent potentially expensive fines and being blacklisted. Once the technical investigation is complete, the auditor generates a report. This report states their findings and can have recommendations to optimize security. An audit can also help save money by finding unused or redundant resources in the cloud system. Main Objectives of a Cloud Security Audit The main objective of a cloud security audit is to evaluate the health of your cloud environment, including any data and applications hosted on the cloud. Other important objectives include: Decide the information architecture: Audits help define the network, security, and systems requirements to secure information. This includes data at rest and in transit. Align IT resources: A cloud audit can align the use of IT resources with business strategies. Identify risks: Businesses can identify risks that could harm their cloud environment. This could be security vulnerabilities, data access errors, and noncompliance with regulations. Optimize IT processes: An audit can help create documented, standardized, and repeatable processes, leading to a secure and reliable IT environment. This includes processes for system ownership, information security, network access, and risk management. Assess vendor security controls: Auditors can inspect the CSP’s security control frameworks and reliability. What Are the Two Types of Cloud Security Audits? Security audits come in two forms: internal and external. In internal audits, a business uses its resources and employees to conduct the investigation. In external audits, a third-party organization is hired to conduct the audit. The internal audit team reviews the organization’s cloud infrastructure and data. They aim to identify any vulnerabilities or compliance issues. A third-party auditor will do the same during an external audit. Both types of audits provide an objective assessment of the security posture . But internal audits are rare since there is a higher chance of prejudice during analysis. Who Provides Cloud Security Audits? Cloud security assessments are provided by: Third-party auditors: Independent third-party audit firms that specialize in auditing cloud ecosystems. These auditors are often certified and experienced in CSP security policies. They also use automated and manual security testing methods for a comprehensive evaluation. Some auditing firms extend remediation support after the audit. Cloud service providers: Some cloud platforms offer auditing services and tools. These tools vary in the depth of their assessments and the features they provide to fix problems. Internal audit teams: Many organizations use internal audit teams. These teams assess the controls and processes using CSPM tools . They provide recommendations for improving security and mitigating risks. Why Cloud Security Audits Are So Important Here are eight ways in which security audits of cloud services are performed: Identify security risks: An audit can identify potential security risks. This includes weaknesses in the cloud infrastructure, apps, APIs, or data. Recognizing and fixing these risks is critical for data protection. Ensure compliance: Audits help the cloud environment comply with regulations like HIPAA, PCI DSS, and ISO 27001. Compliance with these standards is vital for avoiding legal and financial penalties. Optimize cloud processes: An audit can help create efficient processes using fewer resources. There is also a decreased risk of breakdowns or malfunctions. Manage access control: Employees constantly change positions within the company or leave. With an audit, businesses can ensure that everyone has the right level of access. For example, access is completely removed for former employees. Auditing access control verifies if employees can safely log in to cloud systems. This is done via two-step authentication, multi-factor authentication, and VPNs. Assess third-party tools: Multi-vendor cloud systems include many third-party tools and API integrations. An audit of these tools and APIs can check if they are safe. It can also ensure that they do not compromise overall security. Avoid data loss: Audits help companies identify areas of potential data loss. This could be during transfer or backup or throughout different work processes. Patching these areas is vital for data safety. Check backup safety: Cloud vendors offer services to back up company data regularly. An audit of backup mechanisms can ensure they are performed at the right frequency and without any flaws. Proactive risk management: Organizations can address potential risks before they become major incidents. Taking proactive action can prevent data breaches, system failures, and other incidents that disrupt daily operations. Save money: Audits can help remove obsolete or underused resources in the cloud. Doing this saves money while improving performance. Improve cloud security posture: Like an IT audit, a cloud audit can help improve overall data confidentiality, integrity, and availability. How Is a Cloud Security Audit Conducted? The exact audit process varies depending on the specific goals and scope. Typically, an independent third party performs the audit. It inspects a cloud vendor’s security posture. It assesses how the CSP implements security best practices and whether it adheres to industry standards. It also evaluates performance against specific benchmarks set before the audit. Here is a general overview of the audit process: Define the scope: The first step is to define the scope of the audit. This includes listing the CSPs, security controls, processes, and regulations to be assessed. Plan the audit: The next step is to plan the audit. This involves establishing the audit team, a timeline, and an audit plan. This plan outlines the specific tasks to be performed and the evaluation criteria. Collect information: The auditor can collect information using various techniques. This includes analytics and security tools, physical inspections, questioning, and observation. Review and analyze: The auditor reviews all the information to evaluate the security posture. Create an audit report: An audit report summarizes findings and lists any issues. It is presented to company management at an audit briefing. The report also provides actions for improvement. Take action: Companies form a team to address issues in the audit report. This team performs remediation actions. The audit process could take 12 weeks to complete. However, it could take longer for businesses to complete the recommended remediation tasks. The schedule may be extended if a gap analysis is required. Businesses can speed up the audit process using automated security tools . This software quickly provides a unified view of all security risks across multiple cloud vendors. Some CSPs, like Amazon Web Services (AWS) and Microsoft Azure, also offer auditing tools. These tools are exclusive to each specific platform. The price of a cloud audit varies based on its scope, the size of the organization, and the number of cloud platforms. For example, auditing one vendor could take four or five weeks. But a complex web with multiple vendors could take more than 12 weeks. 6 Fundamental Steps of a Cloud Security Audit Six crucial steps must be performed in a cloud audit: 1. Evaluate security posture Evaluate the security posture of the cloud system . This includes security controls, policies, procedures, documentation, and incident response plans. The auditor can interview IT staff, cloud vendor staff, and other stakeholders to collect evidence about information systems. Screenshots and paperwork are also used as proof. After this process, the auditor analyzes the evidence. They check if existing procedures meet industry guidelines, like the ones provided by Cloud Security Alliance (CSA). 2. Define the attack surface An attack surface includes all possible points, or attack vectors, through which unauthorized users can access and exploit a system. Since cloud solutions are so complex, this can be challenging. Organizations must use cloud monitoring and observability technologies to determine the attack surface. They must also prioritize high-risk assets and focus their remediation efforts on them. Auditors must identify all the applications and assets running within cloud instances and containers. They must check if the organization approves these or if they represent shadow IT. To protect data, all workloads within the cloud system must be standardized and have up-to-date security measures. 3. Implement robust access controls Access management breaches are a widespread security risk. Unauthorized personnel can get credentials to access sensitive cloud data using various methods. To minimize security issues related to unauthorized access, organizations must: Create comprehensive password guidelines and policies Mandate multi-factor authentication (MFA) Use the Principle of Least Privilege Access (PoLP) Restrict administrative rights 4. Strict data sharing standards Organizations must install strong standards for external data access and sharing. These standards dictate how data is viewed and accessed in shared drives, calendars, and folders. Start with restrictive standards and then loosen up restrictions when necessary. External access should not be provided to files and folders containing sensitive data. This includes personally identifiable information (PII) and protected health information (PHI). 5. Use SIEM Security Information and Event Management (SIEM) systems can collect cloud logs in a standardized format. This allows editors to access logs and automatically generates reports necessary for different compliance standards. This helps organizations maintain compliance with industry security standards. 6. Automate patch management Regular security patches are crucial. However, many organizations and IT teams struggle with patch management. To create an efficient patch management process, organizations must: Focus on the most crucial patches first Regularly patch valuable assets using automation Add manual reviews to the automated patching process to ensure long-term security How Often Should Cloud Security Audits Be Conducted? As a general rule of thumb, audits are conducted annually or biannually. But an audit should also be performed when: Mandated by regulatory standards. For example, Level 1 businesses must pass at least one audit per year to remain PCI DSS compliant. There is a higher risk level. Organizations storing sensitive data may need more frequent audits. There are significant changes to the cloud environment. Ultimately, the frequency of audits depends on the organization’s specific needs. The Major Cloud Security Audit Challenges Here are some of the major challenges that organizations may face: Lack of visibility Cloud infrastructures can be complex with many services and applications across different providers. Each cloud vendor has their own security policies and practices. They also provide limited access to operational and forensic data required for auditing. This lack of transparency prevents auditors from accessing pertinent data. To gather all relevant data, IT operations staff must coordinate with CSPs. Auditors must also carefully choose test cases to avoid violating the CSP’s security policies. Encryption Data in the cloud is encrypted using two methods — internal or provider encryption. Internal or on-premise encryption is when organizations encrypt data before it is transferred to the cloud. Provider encryption is when the CSP handles encryption. With on-premise encryption, the primary threat comes from malicious internal actors. In the latter method, any security breach of the cloud provider’s network can harm your data. From an auditing standpoint, it is best to encrypt data and manage encryption keys internally. If the CSP handles the encryption keys, auditing becomes nearly impossible. Colocation Many cloud providers use the same physical systems for multiple user organizations. This increases the security risk. It also makes it challenging for auditors to inspect physical locations. Organizations should use cloud vendors that use mechanisms to prevent unauthorized data access. For example, a cloud vendor must prevent users from claiming administrative rights to the entire system. Lack of standardization Cloud environments have ever-increasing entities for auditors to inspect. This includes managed databases, physical hosts, virtual machines (VMs), and containers. Auditing all these entities can be difficult, especially when there are constant changes to the entities. Standardized procedures and workloads help auditors identify all critical entities within cloud systems. Cloud Security Audit Checklist Here is a cloud security audit checklist with example actions taken for each general control area: The above list is not all-inclusive. Each cloud environment and process involved in auditing it is different. Industry Standards To Guide Cloud Security Audits Industry groups have created security standards to help companies maintain their security posture. Here are the five most recognized standards for cloud compliance and auditing: CSA Security, Trust, & Assurance Registry (STAR): This is a security assurance program run by the CSA. The STAR program is built on three fundamental techniques: CSA’s Cloud Control Matrix (CCM) Consensus Assessments Initiative Questionnaire (CAIQ) CSA’s Code of Conduct for GDPR Compliance CSA also has a registry of CSPs who have completed a self-assessment of their security controls. The program includes guidelines that can be used for cloud audits. ISO/IEC 27017:2015: The ISO/IEC 27017:2015 are guidelines for information security controls in cloud computing environments. ISO/IEC 27018:2019: The ISO/IEC 27018:2019 provides guidelines for protecting PII in public cloud computing environments. MTCS SS 584: Multi-Tier Cloud Security (MTCS) SS 584 is a cloud security standard developed by the Infocomm Media Development Authority (IMDA) of Singapore. The standard has guidelines for CSPs on information security controls.Cloud customers and auditors can use it to evaluate the security posture of CSPs. CIS Foundations Benchmarks: The Center for Internet Security (CIS) Foundations Benchmarks are guidelines for securing IT systems and data. They help organizations of all sizes improve their security posture. Final Thoughts on Cloud Security Audits Cloud security audits are crucial for ensuring your cloud systems are secure and compliant. This is essential for data protection and preventing cybersecurity attacks. Auditors must use modern monitoring and CSPM tools like Prevasio to easily identify vulnerabilities in multi-vendor cloud environments. This software leads to faster audits and provides a unified view of all threats, making it easier to take relevant action. FAQs About Cloud Security Audits How do I become a cloud security auditor? To become a cloud security auditor, you need certification like the Certificate of Cloud Security Knowledge (CCSK) or Certified Cloud Security Professional (CCSP). Prior experience in IT auditing, cloud security management, and cloud risk assessment is highly beneficial. Other certifications like the Certificate of Cloud Auditing Knowledge (CCAK) by ISACA and CSA could also help. In addition, knowledge of security guidelines and compliance frameworks, including PCI DSS, ISO 27001, SOC 2, and NIST, is also required. 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Security Policy Management with Professor Wool Best Practices for Amazon Web Services Security Best Practices for Amazon Web Services (AWS) Security is a whiteboard-style series of lessons that examine the challenges of and provide technical tips for managing security across hybrid data centers utilizing the AWS IaaS platform. Lesson 1 In this lesson Professor Wool provides an overview of Amazon Web Services (AWS) Security Groups and highlights some of the differences between Security Groups and traditional firewalls. The lesson continues by explaining some of the unique features of AWS and the challenges and benefits of being able to apply multiple Security Groups to a single instance. The Fundamentals of AWS Security Groups Watch Lesson 2 Outbound traffic rules in AWS Security Groups are, by default, very wide and insecure. In addition, during the set-up process for AWS Security Groups the user is not intuitively guided through a set up process for outbound rules – the user must do this manually. In this lesson, Professor Wool, highlights the limitations and consequences of leaving the default rules in place, and provides recommendations on how to define outbound rules in AWS Security Groups in order to securely control and filter outbound traffic and protect against data leaks. Protect Outbound Traffic in an AWS Hybrid Environment Watch Lesson 3 Once you start using AWS for production applications, auditing and compliance considerations come into play, especially if these applications are processing data that is subject to regulations such as PCI, HIPAA, SOX etc. In this lesson, Professor Wool reviews AWS’s own auditing tools, CloudWatch and CloudTrail, which are useful for cloud-based applications. However if you are running a hybrid data center, you will likely need to augment these tools with solutions that can provide reporting, visibility and change monitoring across the entire environment. Professor Wool provides some recommendations for key features and functionally you’ll need to ensure compliance, and tips on what the auditors are looking for. Change Management, Auditing and Compliance in an AWS Hybrid Environment Watch Lesson 4 In this lesson Professor Wool examines the differences between Amazon's Security Groups and Network Access Control Lists (NACLs), and provides some tips and tricks on how to use them together for the most effective and flexible traffic filtering for your enterprise. Using AWS Network ACLs for Enhanced Traffic Filtering Watch Lesson 5 AWS security is very flexible and granular, however it has some limitations in terms of the number of rules you can have in a NACL and security group. In this lesson Professor Wool explains how to combine security groups and NACLs filtering capabilities in order to bypass these capacity limitations and achieve the granular filtering needed to secure enterprise organizations. Combining Security Groups and Network ACLs to Bypass AWS Capacity Limitations Watch Lesson 6 In this whiteboard video lesson Professor Wool provides best practices for performing security audits across your AWS estate. The Right Way to Audit AWS Policies Watch Lesson 7 How to Intelligently Select the Security Groups to Modify When Managing Changes in your AWS Watch Lesson 8 Learn more about AlgoSec at http://www.algosec.com and read Professor Wool's blog posts at http://blog.algosec.com How to Manage Dynamic Objects in Cloud Environments Watch Have a Question for Professor Wool? Ask him now Choose a better way to manage your network Choose a better way to manage your network Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue

A deep dive into the Multi-Cloud Mess & How AlgoSec connects the dots Download PDF Schedule time with one of our experts Schedule time with one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue