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API

"APIs have become the primary attack surface for modern applications. Broken Object Level Authorization (BOLA) remains the most prevalent API vulnerability, enabling attackers to access data belonging to other users by manipulating object identifiers in API requests."

- OWASP API Security Top 10 2023

Source code access required.

APIs underpin your digital services, from mobile apps to partner integrations. Our API penetration tests start in your API codebase: an operator reads the routing, authentication, and authorisation logic, then tests input validation, rate limiting, and business logic with full knowledge of how each endpoint is implemented.

Source code access lets us trace data flows from endpoint to database, find the object references and authorisation checks that are missing or inconsistent, and map the full API surface from the code so no endpoint is missed. We then chain what we find into working exploits that demonstrate real impact: the records reached, the tenant boundary crossed, the privilege gained.

We test REST, GraphQL, and SOAP APIs against the OWASP API Security Top 10, covering broken authentication, excessive data exposure, lack of rate limiting, mass assignment, and injection vulnerabilities.

Your source code is transferred via encrypted channels, stored securely for the duration of the engagement, and permanently deleted on completion. Your code is never used to train AI models. A deletion certificate is provided.

Resources

CREST Accreditation