Implementing OAST: Step-by-Step Workflow and Checklist

OAST vs. Other Testing Methods: A Comparison

What OAST is

• OAST (Out-of-band Application Security Testing): detects vulnerabilities by forcing a target application to interact with an external, tester-controlled server (DNS/HTTP/SMTP/etc.). Useful for confirming blind or asynchronous issues that produce no in-band response.

How it differs from SAST and DAST

• SAST (Static Application Security Testing):
  • Approach: White‑box, analyzes source/code at rest.
  • Strengths: Early detection during development, comprehensive code coverage, language-aware.
  • Weaknesses: False positives, misses runtime-only issues, limited visibility into deployed environments.