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06/09/2026 9:02 am
TL;DR: APIs carry business logic and sensitive data, yet they are often under-tested, and FireCompass argues that continuous agentic testing is needed because attackers exploit new disclosures in about 3 days while annual engagements miss shadow endpoints and authorization flaws. The real shift is from surface scanning to validated exploit paths, where identity and access controls matter as much as endpoint discovery.
NHIMG editorial — based on content published by FireCompass: API Penetration Testing: What It Is, How It Works, and How to Do It Continuously
By the numbers:
- 40% of API attacks involve broken object-level authorization, rization, according to FireCompass.
- The measured false positive rate stays under 2% in FireCompass customer validation.
Questions worth separating out
Q: How should security teams continuously test APIs in modern environments?
A: Security teams should combine continuous discovery with authenticated and unauthenticated testing, then retest automatically when endpoints change or fixes land.
Q: Why do API attacks so often bypass traditional IAM assumptions?
A: API attacks exploit the fact that a token can be valid while the action is still unsafe.
Q: What are the signs that API penetration testing is missing real risk?
A: If a programme only tests a supplied endpoint list, reports many alerts without proof of exploit, or misses undocumented APIs, it is probably under-covering the true attack surface.
Practitioner guidance
- Map the full API estate continuously Inventory endpoints from code, JavaScript, documentation, traffic, and gateway data so shadow APIs do not sit outside the testing scope.
- Test object and function authorization separately Verify that lower-privilege identities cannot access other users’ objects, privileged functions, or sensitive workflows across REST and GraphQL.
- Require exploit proof before closing findings Use working proof of exploit, reproduction steps, and retest evidence as the remediation standard for every validated API issue.
What's in the full article
FireCompass's full blog covers the operational detail this post intentionally leaves for the source:
- Step-by-step discovery techniques for pulling endpoints from JavaScript, documentation, and live traffic
- The validation workflow for proving BOLA, broken authentication, and function-level authorization issues
- The continuous retesting model used when new endpoints appear or fixes are deployed
- The comparison table showing scanner, manual pentest, and agentic AI coverage differences
👉 Read FireCompass's guide to continuous API penetration testing and OWASP API risks →
API penetration testing and OWASP API risks: are your controls keeping up?
Explore further
06/09/2026 9:02 am
API security is becoming an identity problem, not just an application testing problem. The article shows that the highest-value API risks are broken authentication, token abuse, and object-level authorization, which are all identity and access failures expressed through machine-to-machine interfaces. That means IAM and API governance can no longer be separated cleanly. Practitioners should treat API access paths as part of the identity perimeter, not as a side channel.
A question worth separating out:
Q: Should organisations prioritise continuous validation over annual pentests for APIs?
A: Yes, where APIs change often, because the risk lives in the interval between assessments. Annual pentests still have value for depth, but they cannot track the pace of endpoint churn, authentication drift, or inventory changes. Continuous validation should become the standing control, with periodic testing used for broader assurance.
👉 Read our full editorial: API penetration testing is shifting to continuous exploit validation
