security-best-practices

Comprehensive security hardening for web applications covering HTTPS, input validation, authentication, and OWASP Top 10 vulnerabilities. Express.js security middleware : Joi validation : CSRF Token : .env (never commit) : Kubernetes Secrets : JWT + Refresh Token Rotation : #security #OWASP #HTTPS #CORS #XSS #SQL-injection #CSRF #infrastructure - Enforces HTTPS, security headers (CSP, HSTS), and rate limiting via Helmet and Express middleware to prevent DDoS and common attacks - Prevents SQL Injection and XSS through parameterized queries, input validation with Joi, and output encoding with DOMPurify - Implements CSRF token protection, JWT-based authentication with refresh token rotation, and secret management via environment variables - Includes OWASP Top 10 checklist and best practices for access control, defense in depth, and principle of least privilege - New project : consider security from the start - Security audit : inspect and fix vulnerabilities - Public API : harden APIs accessible externally - Compliance : comply with GDPR, PCI-DSS, etc. - HTTPS Only : HTTPS required in production - Separate secrets : manage via environment variables; never hardcode in code - Input Validation : validate all user input - Parameterized Queries : prevent SQL Injection - Rate Limiting : DDoS prevention - No eval() : code injection risk - No direct innerHTML : XSS risk - No committing...