API Security Testing for Modern Web Applications
The browser and API are one attack surface
Modern interfaces continuously call JSON, GraphQL, and other HTTP APIs. Testing only rendered pages or only an API specification can miss authorization context and behavior created by the complete application flow.
Build an evidence-backed inventory
Observe API requests during real-browser crawling, import known endpoints where appropriate, and group requests by target and authentication persona. Compare discovered traffic with the expected inventory to identify undocumented or unreachable operations.
Test behavior, not only schemas
Validate authorization boundaries, object access, input handling, rate-sensitive workflows, content types, and error behavior. Custom profiles and payloads help adapt tests to the application instead of relying on one generic policy.
Combine automation with investigation
Automation finds repeatable patterns at scale; proxy history and manual request tools help engineers vary parameters and confirm impact. Keep both activities in the same workspace so confirmed findings retain their origin and evidence.
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