V2. Authentication: Daan V3. Session Management: Wouter V4. Access Control: Kelley V5. Input Validation: Mart V6. Output Encoding/Escaping: (Mart) V7. Cryptography at rest: (Wouter) V8. Error Handling & logging: Charlie V9. Data Protection: (Kelley) V11. HTTP Security: (Daan) V16. Files and Recourses: (Charlie)