Troubleshooting Common Issues

Application startup failures represent the most visible IAST issue. Agents might conflict with other monitoring tools, exceed memory limits, or encounter unsupported configurations. Maintain clean rollback procedures to quickly restore application functionality. Start with minimal agent configuration, gradually enabling features after confirming stability. Document working configurations to accelerate future deployments.

Performance degradation requires systematic investigation. Use application performance monitoring to identify specific operations impacted by IAST. Correlate performance metrics with IAST activity to understand cause and effect. Often, specific vulnerability checks or code patterns cause disproportionate overhead. Work with vendors to optimize problematic scenarios or implement workarounds.

False negatives—vulnerabilities IAST misses—demand careful analysis. Verify test coverage actually exercises vulnerable code paths. Confirm agent instrumentation successfully attached to relevant components. Check that security sensors monitor the specific vulnerability class. False negatives often reveal gaps in test coverage rather than IAST limitations, driving testing improvements.