APIs power modern applications, connecting mobile apps, partner integrations, microservices, and front-end clients to your core business logic. This makes them high-value targets. Our API security testing provides thorough coverage of REST, GraphQL, and gRPC endpoints, examining authentication mechanisms, authorization enforcement, data validation, and the underlying business logic that drives your application.
We go beyond the OWASP API Security Top 10 to test for complex attack chains that combine multiple lower-severity issues into critical exploits. Our testers analyze your API schema, documentation, and traffic patterns to identify endpoints that expose excessive data, fail to enforce proper rate limiting, or allow unauthorized access through broken object-level authorization (BOLA). We also examine OAuth 2.0 and JWT implementations for token leakage, signature bypass, and privilege escalation vectors.
Testing OAuth 2.0 flows, JWT validation, API key management, BOLA/BFLA vulnerabilities, and horizontal and vertical privilege escalation across all endpoints.
Comprehensive input fuzzing and injection testing across all parameters, headers, and request bodies to identify SQL injection, NoSQL injection, command injection, and schema bypass vulnerabilities.
Manual analysis of API workflows to detect race conditions, state manipulation, price tampering, coupon abuse, and other logical flaws that automated scanners cannot identify.
Evaluation of throttling mechanisms, brute-force protections, resource exhaustion vectors, and denial-of-service resilience across authentication and data endpoints.
Identification of endpoints that return excessive data, expose internal system details, leak PII through error messages, or fail to properly filter responses based on user permissions.
Testing third-party API integrations, webhook security, callback validation, SSRF vulnerabilities, and data flow between interconnected services and microservices.
We work with your API documentation (OpenAPI/Swagger, GraphQL introspection, Postman collections) and supplement it with active endpoint discovery to ensure complete coverage. All findings include request/response pairs for easy reproduction and validation by your development team.
APIs are your most exposed attack surface. Let us find the vulnerabilities before threat actors do.
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