API Security Testing
Your APIs are the backbone of your product. We make sure they're bulletproof.
Why This Matters
APIs are the #1 attack vector in modern applications. OWASP API Security Top 10 reveals that Broken Object-Level Authorization (BOLA) accounts for the majority of critical API breaches.
APIs handle your most sensitive operations — payments, user data, admin functions. One broken authorization check can expose millions of records. We test every endpoint like an attacker who has read your documentation.
Whether it's REST, GraphQL, gRPC, or WebSocket — we enumerate hidden endpoints, abuse schema definitions, test every authorization permutation, and find the BOLA/IDOR vulnerabilities that scan tools fundamentally cannot detect.
Key Focus Areas
Authorization Deep-Dive
BOLA, BFLA, horizontal/vertical privilege escalation, tenant isolation testing, and role-based access control validation.
Endpoint Discovery
Hidden endpoint enumeration, API versioning abuse, undocumented admin routes, and debug endpoint exposure.
Schema Abuse
GraphQL introspection attacks, excessive data exposure, mass assignment, parameter pollution, and type confusion.
Rate Limiting & Abuse
Brute force attack paths, account takeover via enumeration, missing rate limits on sensitive operations, and DoS vectors.
Auth Token Testing
JWT algorithm confusion, token replay, refresh token rotation flaws, OAuth redirect manipulation, and API key exposure.
Injection via API
NoSQL injection through JSON bodies, GraphQL injection, command injection via API parameters, and batch query abuse.
How We Work
API Documentation Analysis
Review Swagger/OpenAPI specs, GraphQL schemas, and API documentation to build a complete understanding of the attack surface.
Endpoint Enumeration
Automated + manual discovery of all endpoints including hidden, deprecated, and undocumented routes.
Authorization Matrix Testing
Systematic testing of every endpoint with different user roles, verifying object-level and function-level authorization.
Input Validation & Injection
Testing all input vectors — JSON bodies, query params, headers, path params — for injection and mass assignment.
Business Logic & Chaining
API-specific workflow abuse, response manipulation, and chaining multiple API calls into exploit chains.
Reporting with Reproducible PoCs
Every finding includes cURL commands and HTTP request/response pairs that your engineers can immediately reproduce.
What You Get
- API Security Assessment Report
- Postman Collection with PoC requests
- Authorization Matrix Audit
- cURL-based reproducible exploits
- API hardening recommendations
- Free retest within 30 days
Tools & Frameworks
Ready to get started?
Get a free scoping call and we'll tailor this assessment to your exact needs.
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