Interactive Application Security Testing (IAST) combines dynamic and static analysis to inspect running applications from the inside. It monitors requests in real time. It exposes vulnerabilities while the app operates under normal load. In forensic investigations, this is the difference between guessing and knowing.
When a security event occurs, you need precision. IAST tools hook into the runtime. They capture function calls, variable states, and configuration values. The result: a granular view of how the attack vector interacted with the system. This evidence is critical for incident reconstruction, root cause analysis, and proving compliance.
Traditional static scans see code but not execution context. Dynamic scans see behavior but miss internal logic. Forensic IAST unifies both views, revealing flaws like insecure deserialization, SQL injection, cross-site scripting, and misconfigurations with exact stack traces tied to production-like activity.