Comprehensive security testing for REST, GraphQL, SOAP, and gRPC APIs. We identify broken authorisation, excessive data exposure, injection flaws, and rate limiting gaps, with CVSS-scored findings and a free re-test included.
Purpose-built attack scenarios for REST, GraphQL, authentication, and business logic flaws.
We systematically test every endpoint for broken object-level authorisation by manipulating resource IDs to access other users' data across all roles.
We test JWT implementation for weak secrets, algorithm confusion, none algorithm attacks, and improper token validation and expiration handling.
We assess OAuth flows for redirect manipulation, token leakage, CSRF on callback endpoints, and scope abuse across authorisation servers.
We test RBAC enforcement across all API endpoints, identifying privilege escalation paths from standard user to admin roles.
We test token rotation, revocation, concurrent session handling, and whether expired or revoked tokens remain functional.
We assess cross-tenant access in multi-tenant APIs, ensuring authenticated users cannot access data from other organisations.
We test API parameters for SQL injection in JSON bodies, headers, and query strings, plus NoSQL injection in MongoDB and similar databases.
We identify OS command injection in API parameters that flow to system calls, testing both blind and direct execution scenarios.
We test API endpoints that make backend requests for SSRF vulnerabilities, including cloud metadata access and internal service enumeration.
We test GraphQL APIs for introspection disclosure, query depth attacks, circular query denial of service, and unauthorised schema access.
We test SOAP APIs for XML external entity injection, XML bomb attacks, and schema-based vulnerabilities in legacy web services.
We identify server-side template injection in API responses that render user input through template engines like Jinja2, Freemarker, or Velocity.
We test rate limiting enforcement across authentication, password reset, and sensitive endpoints, identifying bypass techniques and missing limits.
We test whether API endpoints accept unintended parameters, allowing attackers to modify privileged fields like role, isAdmin, or pricing.
We test batch and bulk endpoints for authorisation bypass, excessive data access, and denial of service through resource exhaustion.
We identify API responses that return more data than the client needs, including hidden fields, internal IDs, and other users' information.
We test financial APIs for price manipulation, negative quantities, race conditions in transfers, and payment workflow bypasses.
We identify time-of-check to time-of-use vulnerabilities in API operations, testing concurrent requests against stateful operations.
A structured six-phase process aligned with OWASP API Security Top 10, from discovery through verified remediation.
We enumerate all API endpoints, parameters, and data flows through documentation review, traffic analysis, and automated endpoint discovery for undocumented paths.
We test authentication mechanisms, token lifecycle, JWT implementation, OAuth flows, and session management for bypass, forgery, and improper validation.
We test BOLA and IDOR across every endpoint, RBAC enforcement, cross-tenant access, and privilege escalation from standard user to admin roles.
We test for SQL and NoSQL injection, command injection, SSRF, and other injection-class vulnerabilities in all API input parameters and headers.
We test rate limit enforcement, mass assignment, batch endpoint abuse, excessive data exposure, and business logic manipulation in your workflows.
We deliver a CVSS-scored report with proof-of-concept evidence, OWASP API and CWE mapping. Once you remediate, we re-test all findings at no additional cost.
API-first businesses exposing programmatic access to customers and partners, where API flaws translate directly to data breaches and customer trust erosion.
Financial APIs handling transactions, account data, and payment flows that require PCI-DSS compliance and protection against BOLA and data exposure.
Teams running microservice architectures with internal and external APIs who need to validate inter-service trust boundaries and prevent lateral movement through API flaws.