Web Application Security

  1. Authentication and Session Management
    1. Authentication Mechanisms
      1. Password-Based Authentication
        1. Secure Password Storage
          1. Cryptographic Hashing
            1. Salting Techniques
              1. Peppering Methods
                1. Key Stretching
                2. Password Policy Implementation
                  1. Complexity Requirements
                    1. Length Requirements
                      1. Character Set Requirements
                    2. Multi-Factor Authentication
                      1. Knowledge Factors
                        1. Passwords
                          1. Security Questions
                            1. PINs
                            2. Possession Factors
                              1. Hardware Tokens
                                1. Mobile Devices
                                  1. Smart Cards
                                  2. Inherence Factors
                                    1. Biometric Authentication
                                      1. Behavioral Biometrics
                                      2. MFA Implementation Challenges
                                        1. User Experience
                                          1. Recovery Mechanisms
                                            1. Backup Authentication
                                          2. Token-Based Authentication
                                            1. JSON Web Tokens
                                              1. JWT Structure
                                                1. Claims and Payload
                                                  1. Signature Verification
                                                    1. Token Expiration
                                                      1. Token Revocation
                                                      2. OAuth 2.0
                                                        1. Authorization Code Grant
                                                          1. Implicit Grant
                                                            1. Resource Owner Password Credentials Grant
                                                              1. Client Credentials Grant
                                                                1. Scopes and Permissions
                                                                  1. Access Tokens
                                                                    1. Refresh Tokens
                                                                    2. OpenID Connect
                                                                      1. Identity Layer
                                                                        1. ID Tokens
                                                                          1. UserInfo Endpoint
                                                                        2. Certificate-Based Authentication
                                                                          1. Client Certificates
                                                                            1. Certificate Validation
                                                                              1. PKI Infrastructure
                                                                            2. Session Management
                                                                              1. Session Tokens and Cookies
                                                                                1. Token Generation
                                                                                  1. Cryptographically Secure Random Generation
                                                                                    1. Token Entropy
                                                                                    2. Token Storage
                                                                                      1. Server-Side Storage
                                                                                        1. Client-Side Storage
                                                                                        2. Token Expiration
                                                                                          1. Absolute Timeout
                                                                                            1. Idle Timeout
                                                                                              1. Sliding Expiration
                                                                                            2. Session Security Attacks
                                                                                              1. Session Fixation
                                                                                                1. Attack Vectors
                                                                                                  1. Prevention Techniques
                                                                                                  2. Session Hijacking
                                                                                                    1. Network Sniffing
                                                                                                      1. Cross-Site Scripting
                                                                                                        1. Malware-Based Attacks
                                                                                                        2. Cross-Site Request Forgery
                                                                                                          1. CSRF Attack Mechanisms
                                                                                                            1. CSRF Token Implementation
                                                                                                              1. Synchronizer Token Pattern

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                                                                                                      3. Common Vulnerabilities and Attacks

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                                                                                                      5. Secure Development Lifecycle