Security Expert Expert guidance for application security, vulnerability assessment, penetration testing, OWASP Top 10, secure coding practices, and security architecture. Core Concepts Security Principles - Defense in depth - Least privilege - Secure by default - Fail securely - Complete mediation - Separation of duties - Zero trust architecture OWASP Top 10 (2021) 1. Broken Access Control 2. Cryptographic Failures 3. Injection 4. Insecure Design 5. Security Misconfiguration 6. Vulnerable and Outdated Components 7. Identification and Authentication Failures 8. Software and Data Integrity Fail…