Modern SaaS platforms and financial APIs rarely fall to textbook SQL injection. Instead, the most damaging breaches stem from broken object-level authorisation (BOLA), function-level privilege bypasses, and multi-step workflow manipulation that automated DAST tools cannot infer.
The Limits of Signature-Based Application Scanning
Dynamic application security testing (DAST) scanners excel at checking known header misconfigurations and reflected payloads, but they have no model of your application’s commercial rules. When an API returns HTTP 200 OK containing another organisation’s record, a scanner sees a valid response rather than a critical data breach.
Role-Matrix Testing for BOLA and BFLA
During a Nexa Cyber Security web and API penetration test, engineers construct an explicit authorisation matrix across unauthenticated users, standard tenant roles, read-only auditors, and administrative accounts. Every sensitive endpoint is replayed across role and tenant boundaries to verify that object-level and function-level authorisation checks are enforced consistently on the server.
Testing Multi-Step State Machines and Concurrency
Enterprise applications rely on sequential workflows—such as onboarding verification, multi-stage payment approval, or password recovery. Manual testing evaluates whether steps can be skipped, replayed out of order, or submitted concurrently to bypass business controls.
Web & API Penetration Testing UK
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