secure-code-guardian

Secure authentication uses JWT tokens with proper validation, while authorization enforces role-based access control. Combine bcrypt or argon2 for password hashing, implement rate limiting on auth endpoints, manage secrets securely, and handle sessions with secure cookies to prevent unauthorized access.

The OWASP Top 10 lists critical vulnerabilities including injection, broken authentication, and sensitive data exposure. Prevention requires parameterized queries for injection, strong encryption at rest and in transit via HTTPS, input validation and sanitization, security headers, and threat modeling to identify risks early.

Input validation enforces strict rules on data format, length, and type before processing. Use parameterized queries for database operations, sanitize all user-supplied data, employ strong validation libraries, and reject non-conforming input to block SQL injection, XSS, and command injection attacks.

Security headers like CSP, X-Frame-Options, and HSTS protect against XSS and clickjacking. Enforce HTTPS for all traffic, encrypt sensitive data at rest using modern algorithms, implement TLS for transport security, and manage cryptographic keys securely to maintain confidentiality and integrity.

Yes, threat modeling identifies vulnerabilities early in design by analyzing attack surfaces and potential risks. Performing it before implementation helps prioritize security controls, prevent expensive rework, and ensure authentication, authorization, and encryption address your application's specific threats.