Description: Web application firewall evasion refers to the techniques used by attackers to bypass the security measures implemented in firewalls that protect web applications. These firewalls are designed to filter and monitor HTTP traffic, ensuring that requests and responses are safe and free from threats. However, attackers employ various strategies to manipulate requests, hide their malicious activity, and gain unauthorized access to sensitive systems and data. Evasion techniques may include code obfuscation, the use of injection techniques, packet fragmentation, and exploiting vulnerabilities in firewall configurations. The relevance of this topic lies in the increasing sophistication of cyberattacks and the need for organizations to implement robust security measures to protect their web applications. Firewall evasion not only jeopardizes data integrity but can also result in significant financial losses and damage to companies’ reputations. Therefore, it is crucial for organizations to understand these techniques and adopt proactive approaches to strengthen their defenses against potential security breaches.