Interactive Application Security Testing (IAST) Tools

IAST tools combine SAST and DAST approaches by instrumenting applications to observe behavior during testing. This inside-out perspective provides accurate vulnerability detection with minimal false positives. Contrast Security pioneered this approach with agent-based monitoring. Synopsys Seeker provides similar capabilities with strong integration into existing test automation.

IAST deployment requires careful consideration of performance impact and environment support. Agents must be compatible with application runtime environments. Performance overhead, while generally minimal, needs testing in specific contexts. The accuracy benefits often justify these considerations, especially for critical applications.