API Penetration Testing
Deep testing of REST, GraphQL, and gRPC APIs against the OWASP API Security Top 10.
API penetration testing is deep, manual testing of REST, GraphQL, and gRPC endpoints against the OWASP API Security Top 10 — targeting authorization, data exposure, and abuse paths that only surface when a human chains requests.
Teams exposing REST, GraphQL or gRPC APIs and assessing authorization, data access and business workflows.
What to bring to scoping
- ✓Identify API boundaries and authentication flows.
- ✓Provide representative test accounts and API specifications where available.
Where attackers get in — and where we look.
Broken object-level authorization (BOLA)
Broken function-level authorization
Mass assignment
Rate limiting & resource abuse
Token & key handling
An evidence-driven methodology.
Scope & recon
We agree objectives and rules of engagement, then map what you actually expose.
Map the attack surface
Enumerate entry points, roles, and trust boundaries a real attacker would target.
Manual exploitation
Certified testers exploit flaws by hand — chaining issues scanners never connect.
Prove impact
Findings ship with supporting evidence and business context.
Report & retest
Risk-ranked reporting with remediation guidance; retests under agreed terms.
Evidence you can act on.
Documented API scope and tested workflows.
Findings with reproduction evidence and remediation guidance.
Agreed reporting and verification of original-scope fixes.
Scope a standalone API assessment or include the API within an agreed application or PTaaS program.
Discuss this scopeMake it a program.
Pair this test with a program that extends testing between engagements.
PTaaS
Manage scoped penetration testing, QA-reviewed findings, reports, remediation and retests in TrekShield’s platform.
DevSecOps Integration
Security testing paced to your releases and wired into your developer workflow.
Compliance Penetration Testing
Evidence-ready testing for SOC 2, ISO 27001, PCI DSS, HIPAA, and more.
API Penetration Testing — questions buyers ask.
Which API types do you test?
REST, GraphQL, gRPC, and webhook-driven APIs — authenticated and unauthenticated, across web and mobile backends.
What is BOLA and why does it matter?
Broken Object-Level Authorization (BOLA/IDOR) lets one user access another’s data by changing an identifier. It is the top API risk and a primary focus of our testing.
Do you need our API documentation?
An OpenAPI/Postman spec speeds things up and improves coverage, but we can also test and map undocumented endpoints.
Prove what an attacker could actually do.
A short scoping call, no obligation.