What problem does it solve? Code changes that touch authentication, secrets, permissions, or external input can silently introduce security regressions, and ad-hoc reviews often miss critical trust boundaries or unsafe defaults. ## Core Features & Use Cases - Prioritized Review Scope: Focuses analysis on authentication and authorization, secret handling, input validation, file and shell safety, and network boundaries. - Structured Checklist: Walks through trust boundary identification, permission scope checks, secret exposure detection, validation ordering, and missing security tests. - Actionable Output: Produces findings ordered by severity, residual risks, and recommended fixes. - Use Case: Before merging a pull request that adds a new API endpoint accepting user input, run this review to verify input validation happens before side effects and no secrets leak into logs. ## Quick Start Review the changes in this pull request for security issues covering auth, secrets, permissions, and input handling.