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Organizations no longer keep their data in one centralized location. Users and assets responsible for processing data may be located... Zero Trust How to Create a Zero Trust Network 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 2/12/24 Published Organizations no longer keep their data in one centralized location. Users and assets responsible for processing data may be located outside the network, and may share information with third-party vendors who are themselves removed from those external networks. The Zero Trust approach addresses this situation by treating every user, asset, and application as a potential attack vector whether it is authenticated or not. This means that everyone trying to access network resources will have to verify their identity, whether they are coming from inside the network or outside. What are the Zero Trust Principles and Concepts? The Zero Trust approach is made up of six core concepts that work together to mitigate network security risks and reduce the organization’s attack surface. 1. The principle of least privilege Under the Zero Trust model, network administrators do not provide users and assets with more network access than strictly necessary. Access to data is also revoked when it is no longer needed. This requires security teams to carefully manage user permissions , and to be able to manage permissions based on users’ identities or roles. The principle of least privilege secures the enterprise network ecosystem by limiting the amount of damage that can result from a single security failure. If an attacker compromises a user’s account, it won’t automatically gain access to a wide range of systems, tools, and workloads beyond what that account is provisioned for. This can also dramatically simplify the process of responding to security events, because no user or asset has access to assets beyond the scope of their work. 2. Continuous data monitoring and validation Zero trust policy assumes that there are attackers both inside and outside the network. To guarantee the confidentiality, integrity, and availability of network assets, it must continuously evaluate users and assets on the network. User identity and privileges must be checked periodically along with device identity and security. Organizations accomplish this in a variety of ways. Connection and login time-outs are one way to ensure periodic monitoring and validation since it requires users to re-authenticate even if they haven’t done anything suspicious. This helps protect against the risk of threat actors using credential-based attacks to impersonate authenticated users, as well as a variety of other attacks. 3. Device access control Organizations undergoing the Zero Trust journey must carefully manage and control the way users interact with endpoint devices. Zero Trust relies on verifying and authenticating user identities separately from the devices they use. For example, Zero Trust security tools must be able to distinguish between two different individuals using the same endpoint device. This approach requires fundamental changes to the way certain security tools work. For example, firewalls that allow or deny access to network assets based purely on IP address and port information aren’t sufficient. Most end users have more than one device at their disposal, and it’s common for mobile devices to change IP addresses. As a result, the cybersecurity tech stack needs to be able to grant and revoke permissions based on the user’s actual identity or role. 4. Network micro segmentation Network segmentation is a good security practice even outside the Zero Trust framework, but it takes on special significance when threats can come from inside and outside the network. Microsegmentation takes this one step further by breaking regular network segments down into small zones with their own sets of permissions and authorizations. These microsegments can be as small as a single asset, and an enterprise data center may have dozens of separately secured zones like these. Any user or asset with permission to access one zone will not necessarily have access to any of the others. Microsegmentation improves security resilience by making it harder for attackers to move between zones. 5. Detecting lateral movement Lateral movement is when threat actors move from one zone to another in the network. One of the benefits of micro segmentation is that threat actors must interact with security tools in order to move between different zones on the network. Even if the attackers are successful, their activities generate logs and audit trails that analysts can follow when investigating security incidents. Zero Trust architecture is designed to contain attackers and make it harder for them to move laterally through networks. When an attack is detected, the compromised asset can be quarantined from the rest of the network. Assets can be as small as individual devices or user accounts, or as large as entire network segments. The more granular your security architecture is, the more choices you have for detecting and preventing lateral movement on the network. 6. Multi-factor authentication (MFA) Passwords are a major problem for traditional security models, because most security tools automatically extend trust to anyone who knows the password. Once a malicious actor learns a privileged user’s login credentials, they can bypass most security checks by impersonating that user. Multi-factor authentication solves that problem by requiring users to provide more information. Knowing a password isn’t enough – users must authenticate by proving their identity in another way. These additional authentication factors can come in the form of biometrics, challenge/response protocols, or hardware-based verifications. How To Implement a Zero Trust Network 1. Map Out Your Attack Surface There is no one-size-fits-all solution for designing and implementing Zero Trust architecture. You must carefully define your organization’s attack surface and implement solutions that protect your most valuable assets. This will require a variety of tools, including firewalls, user access controls, permissions, and encryption. You will need to segment your network into individual zones and use microsegmentation to secure high-value and high-volume zones separately. Pay close attention to how your organization secures its most important assets and connections: Sensitive data . This might include customer and employee data, proprietary information, and intellectual property that you can’t allow threat actors to gain access to. It should benefit from the highest degree of security. Critical applications. These applications play a central role in your organization’s business processes, and must be protected against the risk of disruption. Many of them process sensitive data and must benefit from the same degree of security. Physical assets. This includes everything from customer-facing kiosks to hardware servers located in a data center. Access control is vital for preventing malicious actors from interacting with physical assets. Third-party services. Your organization relies on a network of partners and service providers, many of whom need privileged access to your data. Your Zero Trust policy must include safeguards against attacks that compromise third-party partners in your supply chain. 2. Implement Zero Trust Controls using Network Security Tools The next step in your Zero Trust journey is the implementation of security tools that allow you collect, analyze, and respond to user behaviors on your network. This may require the adjustment of your existing security tech stack, and the addition of new tools designed for Zero Trust use cases. Firewalls must be able to capture connection data beyond the traditional IP, port, and protocol data that most simple solutions rely on. The Zero Trust approach requires inspecting the identities of users and assets that connect with network assets, which requires more advanced firewall technology. This is possible with next generation firewall (NGFW) technology. VPNs may need to be reconfigured or replaced because they do not typically enforce the principle of least privilege. Usually, VPNs grant users access to the entire connected network – not just one small portion of it. In most cases, organizations pursuing Zero Trust stop using VPNs altogether because they no longer provide meaningful security benefits. Zero Trust Network Access (ZTNA) provides secure access to network resources while concealing network infrastructure and services. It is similar to a software-defined perimeter that dynamically responds to network changes and grants flexibility to security policies. ZTNA works by establishing one-to-one encrypted connections between network assets, making imprecise VPNs largely redundant. 3. Configure for Identity and Access Management Identity-based monitoring is one of the cornerstones of the Zero Trust approach. In order to accurately grant and revoke permissions to users and assets on the network, you must have some visibility into the identities behind the devices being used. Zero Trust networks verify user identities in a variety of ways. Some next-generation firewalls can distinguish between user traffic, device traffic, application traffic, and content. This allows the firewall to assign application sessions to individual users and devices, and inspect the data being transmitted between individuals on networks. In practice, this might mean configuring a firewall to compare outgoing content traffic with an encrypted list of login credentials. If a user accidentally logs onto a spoofed phishing website and enters their login credentials, the firewall can catch the data before it is transferred off the network. This would not be possible without the ability to distinguish between different types of traffic using next-generation firewall technology. Multi-factor authentication is also vital to identity and access management. A Zero Trust network should not automatically authenticate a user who presents the correct username and password combination to access a secure account. This does not prove the identity of the individual who owns the account – it only proves that the individual knows the username and password. Additional verification factors make it more likely that this person is, in fact, the owner of the account. 4. Create a Zero Trust Policy for Your IT Environment The process of implementing Zero Trust policies in cloud-native environments can be complex. Every third-party vendor and service provider has a role to play in establishing and maintaining Zero Trust. This often puts significant technical demands on third-party partners, which may require organizations to change their existing agreements. If a third-party partner cannot support Zero Trust, they can’t be allowed onto the network. The same is true for on-premises and data center environments, but with added emphasis on physical security and access control. Security leaders need to know who has physical access to servers and similar assets so they can conduct investigations into security incidents properly. Data centers need to implement strict controls on who interacts with protected equipment and how their access is supervised. How to Operationalize Zero Trust Your Zero Trust implementation will not automatically translate to an operational security context that you can immediately use. You will need to adopt security operations that reflect the Zero Trust strategy and launch adaptive security measures that address vulnerabilities in real-time. Gain visibility into your network. Your network perimeter is no longer strictly defined by its hardware. It consists of cloud resources, automated workflows, operating systems, and more. You won’t be able to enforce Zero Trust without gaining visibility into every aspect of your network environment. Monitor network infrastructure and traffic. Your security team will need to monitor and respond to access requests coming from inside and outside your network. This can lead to significant bottlenecks if your team is not equipped with solutions for automatically managing network traffic and access. Streamline detection and response. Zero Trust networks mitigate the risks of cyberattacks, malware, ransomware, and other potential threats, but it’s still up to individual security analysts to detect and investigate security incidents. The volume of data analysts must inspect may increase significantly, so you should be prepared to mitigate the issue of alert fatigue. Automate Endpoint Security. Consider implementing an automated Endpoint Detection and Response (EDR) solution that can identify malicious behaviors on network devices and address them in real-time. Implement Zero Trust With AlgoSec AlgoSec is a global cybersecurity leader that provides secure application connectivity and policy management through a unified platform. It aligns with Zero Trust principles to provide comprehensive traffic flow analysis and optimization while automated policy changes and eliminating the risk of compliance violations. Security leaders rely on AlgoSec to implement and operationalize Zero Trust deployments while proactively managing complex security policies . AlgoSec can help you establish a Zero Trust network quickly and efficiently, providing visibility and change management capabilities to your entire security tech stack and enabling security personnel to address misconfiguration risks in real-time. Book a demo now to find out how AlgoSec can help you adopt Zero Trust security and prevent attackers from infiltrating your organization. Schedule a demo Related Articles 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 5 Multi-Cloud Environments Cloud Security 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

AlgoSec Cloud Services Security Practices 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

The Case and Criteria for Application-Centric Security Policy Management 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

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 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 5 Multi-Cloud Environments Cloud Security 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

Webinars Beyond Connectivity: A Masterclass in Network Security with Meraki & AlgoSec Learn details of how to overcome common network security challenges, how to streamline your security management, and how to boost your security effectiveness with AlgoSec and Cisco Meraki’s enhanced integration. This webinar highlights real-world examples of organizations that have successfully implemented AlgoSec and Cisco Meraki solutions. January 18, 2024 Relevant resources Cisco Meraki – Visibility, Risk & Compliance Demo Watch Video 5 ways to enrich your Cisco security posture with AlgoSec Watch Video 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

Best practices for network security governance in AWS and hybrid network environments Webinars Turning Network Security Alerts into Action: Change Automation to the Rescue You use multiple network security controls in your organization, but they don’t talk to each other. And while you may get alerts that come with tools such as SIEM solutions and vulnerability scanners – in your security landscape, making the necessary changes to proactively react to the myriad of alerts is difficult. Responding to alerts feels like a game of whack-a-mole. Manual changes are also error-prone, resulting in misconfigurations. It’s clear that manual processes are insufficient for your multi-device, multi-vendor, and heterogeneous environment network landscape. What’s the solution? Network security change automation! By implementing change automation for your network security policies across your enterprise security landscape you can continue to use your existing business processes while enhancing business agility, accelerate incident response times, and reduce the risk of compliance violations and security misconfigurations. In this webinar, Dania Ben Peretz, Product Manager at AlgoSec, shows you how to: Automate your network security policy changes without breaking core network connectivity Analyze and recommend changes to your network security policies Push network security policy changes with zero-touch automation to your multi-vendor security devices Maximize the ROI of your existing security controls by automatically analyzing, validating, and implementing network security policy changes – all while seamlessly integrating with your existing business processes April 7, 2020 Dania Ben Peretz Product Manager Relevant resources Network firewall security management See Documentation Simplify and Accelerate Large-scale Application Migration Projects 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

The certification demonstrates AlgoSec’s commitment to protecting its customers’ and partners’ data Data protection is a top priority for... Auditing and Compliance AlgoSec attains ISO 27001 Accreditation 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 1/27/20 Published The certification demonstrates AlgoSec’s commitment to protecting its customers’ and partners’ data Data protection is a top priority for AlgoSec, proven by the enhanced security management system we have put in place to protect our customers’ assets. This commitment has been recognized by the ISO, who has awarded AlgoSec the ISO/IEC 27001 certification . The ISO 27001 accreditation is a voluntary standard awarded to service providers who meet the criteria for data protection. It outlines the requirements for building, monitoring, and improving an information security management system (ISMS); a systematic approach to managing sensitive company information including people, processes and IT systems. The ISO 27001 standard is made up of ten detailed control categories detailing information security, security organization, personnel security, physical security, access control, continuity planning, and compliance. To achieve the ISO 27001 certification, organizations must demonstrate that they can protect and manage sensitive company and customer information and undergo an independent audit by an accredited agency. The benefits of working with an ISO 27001 supplier include: Risk management – Standards that govern who can access information. Information security – Standards that detail how data is handled and transmitted. Business continuity – In order to maintain compliance, an ISMS must be continuously tested and improved. Obtaining the ISO 27001 certification is a testament to our drive for excellence and offers reassurance to our customers that our security measures meet the criteria set out by a global defense standard. Schedule a demo Related Articles 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 5 Multi-Cloud Environments Cloud Security 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

Learn about the nuances of cloud network security and why it’s a strategic imperative. Cloud network security strategic imperative 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. Cloud network security explained What is cloud network security? Core components of cloud network security Why is cloud network security critical? Recommendations for cloud network security How AlgoSec tackles complex cloud network security challenges Conclusion FAQs Get the latest insights from the 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

Multi-cloud environments create complex IT architectures that are hard to secure. Although cloud computing creates numerous advantages... Cloud Security 3 Proven Tips to Finding the Right CSPM Solution 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 11/24/22 Published Multi-cloud environments create complex IT architectures that are hard to secure. Although cloud computing creates numerous advantages for companies, it also increases the risk of data breaches. Did you know that you can mitigate these risks with a CSPM? Rony Moshkovitch, Prevasio’s co-founder, discusses why modern organizations need to opt for a CSPM solution when migrating to the cloud and also offers three powerful tips to finding and implementing the right one. Cloud Security Can Get Messy if You Let it A cloud-based IT infrastructure can lower your IT costs, boost your agility, flexibility, and scalability, and enhance business resilience. These great advantages notwithstanding, the cloud also has one serious drawback: it is not easy to secure. When you move from an on-premise infrastructure to the cloud, the size of your digital footprint expands. This can attract hackers on the prowl who are looking for the first opportunity to compromise your assets or steal your data. Cloud security solutions include multiple elements that must be managed and protected, such as microservices, containers, and serverless functions. These elements increase cloud complexity, reduce visibility into the cloud estate, and make it harder to secure. For all these reasons, security issues arise in the cloud, increasing the risk of breaches that may result in financial losses, legal liabilities, or reputational damage. To protect the complex and fluid cloud environment, sophisticated automation is essential. Enter cloud security posture management. How to Identify and Implement the Right CSPM Solution 1) It must offer a flat learning curve to accelerate time to value: The CSPM solution can be easy to implement, adopt, and use. It should not burden your security team. Rather, it should simplify cloud security by providing non-intrusive, agentless scans of all cloud accounts, services, and assets. It should also provide actionable information in a single-pane-of-glass view that clearly reveals what needs to be remediated in order to strengthen your cloud security posture. In addition, the solution should generate reports that are easy to understand and share. 2) It must support non-intrusive, agentless, static and dynamic analyses: Some CSPM solutions only support static scans, leaving dynamic scans to other intrusive solutions. The problem with the latter is that they require agents to be deployed, managed, and updated for every scan, increasing the organization’s technical debt and forcing security teams to spend expensive (and scarce) resources on solution management. The best way to minimize the debt and the management burden on security teams is to choose a CSPM that can scan for threats in an agentless manner. It should also perform agentless dynamic analyses on all container applications and images that can reveal valuable information about exposed network ports and other risks. 3) It must be reasonably priced: CSPM is important but it shouldn’t burn a hole in your pocket. The solution should fit your security budget and match your organization’s size, cloud environment complexity, and cloud asset usage. Also, look for a vendor that provides a transparent license model and dynamic security features instead of just dynamic, expensive billing (that could reduce your ability to control your cloud costs). Conclusion and next steps The global CSPM market is set to double from $4.2 billion in 2022 to $8.6 billion by 2027. Already, many CSPM vendors and solutions are available. In order to select the best solution for your organization, make sure to consider the three tips discussed here. Need more tailored advice about the security needs of your enterprise cloud? Schedule a demo Related Articles 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 5 Multi-Cloud Environments Cloud Security 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

The aim of this post is to provide a very high-level illustration of the DNS Tunneling method used in the SolarWinds supply chain attack.... Cloud Security DNS Tunneling In The SolarWinds Supply Chain Attack 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 12/23/20 Published The aim of this post is to provide a very high-level illustration of the DNS Tunneling method used in the SolarWinds supply chain attack . An Attacker compromises SolarWinds company and trojanizes a DLL that belongs to its software. Some of the customers receive the malicious DLL as an update for the SolarWinds Orion software. “Corporation XYZ” receives the malicious and digitally signed DLL via update. SolarWinds Orion software loads the malicious DLL as a plugin. Once activated, the DLL reads a local domain name “local.corp-xyz.com” (a fictious name). The malware encrypts the local domain name and adds it to a long domain name. The long domain name is queried with a DNS server (can be tapped by a passive DNS sensor). The recursive DNS server is not authorized to resolve avsvmcloud[.]com, so it forwards the request. An attacker-controlled authoritative DNS server resolves the request with a wildcard A record. The Attacker checks the victim’s name, then adds a CNAME record for the victim’s domain name. The new CNAME record resolves the long domain name into an IP of an HTTP-based C2 server. The malicious DLL downloads and executes the 2nd stage malware (TearDrop, Cobalt Strike Beacon). A Threat Researcher accesses the passive DNS (pDNS) records. One of the long domain names from the pDNS records is decrypted back into “local.corp-xyz.com”. The Researcher deducts that the decrypted local domain name belongs to “Corporation XYZ”. Schedule a demo Related Articles 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 5 Multi-Cloud Environments Cloud Security 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

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 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 5 Multi-Cloud Environments Cloud Security 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

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