API security

Security review starts with a specific relationship: which identity may perform which action on which resource? Write that relationship down before designing requests. A clear permission model makes it easier to recognize both an unintended success and a denial that still exposes too much information.

The articles in this category focus on authorized, controlled checks. Use the API permission checklist to organize test accounts, expected outcomes, and evidence. Include object access, restricted fields, and the state of the system after a rejected operation.

For a deeper assessment, begin with penetration-test scope and evidence planning. Agree the assets, limits, and reporting process with the owner. Keep findings tied to the observed behavior and the affected version, then retest the corrected control rather than assuming one successful fix covers every related path.