Agentic Coding Security Management (ACSM) and Dynamic Application Security Testing (DAST) operate at entirely different points in the software lifecycle. These are complementary yet fundamentally different approaches to security testing.
Different Timing
ACSM operates during code generation. When an AI coding agent is generating code, ACSM provides repository-specific security context and reviews code output in real-time. The code hasn't been deployed yet and it might not even be committed.
DAST operates on running applications. The code has been written, deployed, and is executing in some environment. To identify vulnerabilities, DAST sends requests to the already-running application and analyzes how it responds.
Findings of ACSM vs. DAST
ACSM catches issues in the code itself. It identifies patterns that are known to be vulnerable, missing validation, insecure defaults, and other vulnerability-causing problems. These issues exist in source code before the application ever runs.
On the other hand, DAST catches issues that manifest at runtime, such as authentication bypasses, session management flaws, and server misconfigurations. Some of these correspond to code issues, while others are deployment or configuration problems that aren't visible in source code alone.
The Practical Distinction
Take SQL injection as an example.
- ACSM might prevent a coding agent from generating code that concatenates user input directly into a SQL query. This way, the vulnerable pattern doesn't emerge in the first place.
- DAST would find SQL injection in existing code by sending malicious input to a running application and observing whether the database responds inappropriately. The vulnerable code already exists and is deployed, and DAST discovers it can be exploited.
Both approaches add value, but at different points. ACSM prevents certain classes of issues earlier, while DAST validates that running applications behave securely.
Corridor Works Side by Side With DAST Tools
Corridor provides the ACSM layer, catching vulnerabilities during code generation. DAST tools then test the deployed application, finding issues that only manifest at runtime. Together, they provide defense in depth across the development lifecycle.