Secure
Your APIs
Inside
& Out
We test your REST, GraphQL, and SOAP APIs for authentication bypasses, injection flaws, rate limiting gaps, and broken object-level authorisation that could expose your data.
What We Test
Your API Attack Surface
APIs are the backbone of modern applications. Every endpoint, parameter, and authentication flow is a potential target. We test them all.
Authentication & Token Security
Testing OAuth2, JWT, API keys, and session management for bypass vulnerabilities, token leakage, and weak implementations.
Broken Object-Level Authorisation
Testing for BOLA/IDOR vulnerabilities where users can access or modify other users data by manipulating object IDs.
Injection & Input Validation
Testing API parameters for SQL injection, NoSQL injection, command injection, and server-side template injection.
Rate Limiting & Resource Exhaustion
Assessing API rate limiting, pagination controls, and resource consumption to prevent denial-of-service and brute-force attacks.
Data Exposure & Excessive Data
Identifying endpoints that return more data than necessary, exposing sensitive fields, internal IDs, or debug information.
GraphQL-Specific Testing
Testing GraphQL introspection, query depth limits, batching attacks, and field-level authorisation for GraphQL APIs.
Why It Matters
Benefits of API Testing
APIs often carry more sensitive data than web frontends. Here is what thorough API testing delivers.
Protect Your Data Pipeline
APIs handle your most sensitive data flows. We identify where that data can be intercepted, modified, or exfiltrated.
Find Business Logic Flaws
API-specific business logic vulnerabilities like BOLA, mass assignment, and function-level authorisation bypass that scanners cannot find.
Secure Third-Party Integrations
Test the APIs you expose to partners and the APIs you consume to ensure neither introduces risk into your environment.
Meet Compliance Requirements
API penetration testing satisfies security testing requirements under PCI DSS, ISO 27001, SOC 2, and GDPR.
Developer-Friendly Output
Findings include endpoint-specific details, request/response evidence, and remediation guidance your development team can act on immediately.
Test Before You Ship
Integrate API security testing into your CI/CD pipeline to catch vulnerabilities before they reach production.
Our Process
How It Works
A structured, transparent process from scoping through to remediation support.
Scoping
We review your API documentation, agree on endpoints in scope, and set up test credentials and environments.
Discovery
API endpoint enumeration, schema analysis, authentication flow mapping, and technology fingerprinting.
Testing
Manual exploitation following OWASP API Security Top 10 methodology with custom attack scenarios.
Reporting
Endpoint-level findings with request/response evidence, severity ratings, and developer-ready remediation.
Ready to Secure Your APIs?
Book a free scoping call to discuss your API testing requirements and get a fixed-price quote.
Get in Touch