API & Authentication Testing
API authorization testing
A client application is not a trusted authorization boundary. For every privileged operation, the server should derive permissions from authenticated identity and server-side policy.
- Use two authorized test accounts.
- Compare access to resources owned by each account.
- Record only synthetic data.
- Report authorization failures with minimal proof.
Golden rule
Do not test accounts or records belonging to unrelated users. Use only accounts and data included in the authorization scope.
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