# Version Control Security Audit Checklist  

   ## Core Security Domains  
   1. **Authentication**  
      - [ ] MFA required for lock overrides (Branch Locking.md Line 58)  
      - [ ] Session invalidation on permission changes  

   2. **Authorization**  
      - [ ] Role hierarchy enforcement (Approval Workflow.md Line 22)  
      - [ ] Context-sensitive permission checks  

   3. **Data Protection**  
      - [ ] Encryption of comparison metadata (Version Comparison.md Line 6)  
      - [ ] Audit log integrity verification  

   4. **Workflow Security**  
      - [ ] State machine tamper detection (Approval Workflow.md Line 45)  
      - [ ] Comment edit history immutability  

   ## Threat Mitigation Table  
   | Threat Type | Affected Feature | Mitigation Strategy |  
   |-------------|------------------|---------------------|  
   | Race Conditions | Branch Locking | Optimistic locking with version stamps |  
   | XSS | Change Comments | DOMPurify integration (Line 89) |  
   | Data Leakage | Version Comparison | Strict field-level encryption |  
   | Repudiation | Approval Workflow | Blockchain-style audit trail |  

   ## Testing Procedures  
   1. **Penetration Tests**  
      - Lock bypass attempts via API fuzzing  
      - Approval state injection attacks  

   2. **Static Analysis**  
      - OWASP ZAP scan configuration  
      - SonarQube security rule activation  

   3. **Runtime Monitoring**  
      - Unauthorized diff access alerts  
      - Abnormal approval pattern detection  

   ## Phase Integration  
   | Development Phase | Security Focus |  
   |--------------------|----------------|  
   | Locking Implementation | Permission model validation |  
   | Workflow Development | State transition auditing |  
   | Comment System | Content sanitization checks |  
   | Comparison Tool | Data anonymization tests |  

   ## Severity Levels  
   - **Critical**: Direct system access vulnerabilities  
   - **High**: Data integrity risks  
   - **Medium**: UX security weaknesses  
   - **Low**: Informational exposure