w3af (Web Application Attack and Audit Framework) is aDynamic Application Security Testing (DAST)tool. It analyzes running web applications by sending crafted requests and observing responses to identify vulnerabilities such as SQL injection, cross-site scripting, and authentication flaws. Unlike SAST tools, w3af does not require access to source code and instead operates externally, simulating real-world attack behavior. SCA focuses on third-party dependencies, and IAST requires runtime instrumentation within the application. Since Debra detected vulnerabilities by actively interacting with the application, w3af clearly represents DAST. DAST tools are especially valuable during the Build and Test stage, as they validate application behavior from an attacker’s perspective before deployment.

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