API Penetration Testing

APIs are the most exposed and most attacked part of modern applications. We test your REST, GraphQL and SOAP APIs against the OWASP API Security Top 10, focusing on the authorization and data-exposure flaws that automated scanners miss.

  • Full OWASP API Security Top 10 coverage
  • REST, GraphQL and SOAP APIs
  • Authorization (BOLA/BFLA) and data-exposure focus
  • Delivered by APIsec-certified testers
Test my APIs

Broken object & function level authorization (BOLA/BFLA)

The number-one API risk: accessing other users’ objects or privileged functions by manipulating identifiers, roles and parameters across every endpoint.

Authentication & token security

Weak or missing authentication, JWT and API-key handling, OAuth/OIDC misconfigurations, and credential and session attacks.

Excessive data exposure & mass assignment

Endpoints returning more data than the client needs, and accepting unexpected parameters that let attackers change protected fields.

Rate limiting, resource consumption & business logic

Unrestricted resource consumption (DoS), scraping, and abuse of legitimate workflows and quotas.

GraphQL & schema-specific testing

Introspection exposure, deeply nested query denial-of-service, batching abuse and resolver-level authorization gaps.

Frameworks & standards

  • OWASP API Security Top 10 (2023)
  • OWASP WSTG
  • CWE

What you get

  • Findings per endpoint with severity (CVSS) and reproduction
  • Remediation guidance for developers
  • Executive summary for management and auditors
  • Free remediation retest

FAQ

What do you need to start?

API documentation (OpenAPI/Swagger or a Postman collection) and test accounts with different roles.

Do you test GraphQL?

Yes — including introspection, nested-query DoS, batching and resolver authorization.

Can this be combined with the web app test?

Yes — APIs and their web front-ends are often scoped together for full coverage.