REST API Security Assessment

It evaluates RESTful APIs for security vulnerabilities — broken object- and function-level authorization, broken authentication, excessive data exposure, unrestricted resource consumption, SSRF, injection, and misconfiguration — measured against the OWASP API Security Top 10, with each finding proven and rated.

BOLA (Broken Object Level Authorization) is when the API returns or changes an object based only on the identifier in the request, without checking that the caller owns it — so changing an id reaches another user's data. It tops the OWASP API list because it is common, easy to exploit, and directly exposes data; scanners rarely catch it because it needs an understanding of who should access what, which is why we test it with accounts across roles.

The API base URL and environment, its documentation or OpenAPI schema if available, and test accounts for each role (at least two users per role, so we can test cross-user access). A staging environment that mirrors production is ideal. We agree the scope and any endpoints to avoid before we begin.

Black-box means we test with no inside knowledge, like an outside attacker; white-box means we also have documentation, schema, and sometimes source; grey-box sits in between, typically with credentials and API docs. For APIs we usually recommend grey-box: with roles and documentation we cover the access-control and business-logic flaws far more thoroughly, in less time, than a blind black-box test.

Each finding gets a CVSS score for a common baseline, adjusted by the real business impact in your context — what data or operation it exposes, how easily it is reached, and what an attacker gains. That is why two issues with the same CVSS can be prioritized differently.

We prefer a staging environment that mirrors production. When testing must run against production, we agree limits in advance — no destructive actions, care around bulk and rate-heavy tests, and a contact on your side to pause immediately if anything looks wrong.

Yes. After you remediate, we re-test the reported findings to confirm each fix holds and did not introduce a new issue, and we update their status in the report.

A web test exercises the browser-facing application; an API test targets the interface directly, without the UI. APIs expose object identifiers, roles, and operations more directly, so authorization and business-logic flaws dominate, and the reference standard is the OWASP API Security Top 10 rather than the web-focused WSTG.

It depends on the number of endpoints, the number of roles, and the complexity of the business logic; a typical assessment runs about two to four weeks. We give a firm estimate after scoping, once the endpoint and role count is known.