Web Application Security

Writing code is easier than writing secure code, but the gap between the two is mostly a set of well-known patterns you can learn once and apply everywhere. This category covers the OWASP Top 10 from a working-developer perspective: SQL injection prevention with parameterised queries, CSRF tokens with modern SameSite cookie strategy, XSS protection, secure password hashing, rate limiting, and security headers. Examples in PHP, Node.js, and major frameworks. For infrastructure-level defences (firewalls, ModSecurity, fail2ban), see our VPS firewall category. Security is not a feature — it is a habit. Start with the top articles and integrate their checklists into your code reviews.