Security Implementation Guide
Backend security hardening for multi-tenant SaaS
Testing Instructions
1. Verify Tenant Isolation: Login as Company A admin, try to access /api/company-b-reservations → Should get 403
2. Check Audit Logs: Review console logs for [AUDIT] and [SECURITY] entries after each operation
3. Test Permissions: Login as viewer role, try to create vehicle → Button hidden, API blocks with 403
4. Impersonation Test: Super admin clicks LogIn on company card → Yellow banner appears → Return button logs event
5. Payment Audit: Complete a booking payment → Check console for [AUDIT] payment_processed event with CRITICAL severity