Security
XSS, CSRF, auth, CORS, HTTPS — protect your applications.
9 articles
Security Headers & Best Practices — The Complete Guide
Learn how to configure HTTP security headers to protect your web application. Covers Content-Security-Policy, X-Frame-Options, HSTS, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.
API Security Checklist — Protecting Your Web APIs
A comprehensive guide to securing REST APIs. Covers rate limiting, input validation, output encoding, error handling, authentication, authorization, and HTTPS enforcement with practical code examples.
Password Security & Management — Hashing, Salting, and Secure Flows
Learn how to properly hash, salt, and manage passwords. Covers bcrypt, argon2, scrypt comparison, rainbow table prevention, pepper secrets, password reset flows, and frontend validation.
CORS (Cross-Origin Resource Sharing) — The Complete Guide
Understand the Same-Origin Policy, CORS headers, preflight requests, credentials, and how to debug CORS errors. Practical examples for Express, Next.js, and frontend applications.
HTTPS & SSL/TLS Basics — Securing Web Communication
Understand how HTTPS, SSL, and TLS protect data in transit. Learn the TLS handshake, certificate types, HSTS headers, and how to avoid mixed content issues.
Authorization Patterns — RBAC, PBAC, ABAC & API Access Control
Learn how to implement authorization in web applications. Covers Role-Based, Permission-Based, and Attribute-Based access control with practical code examples for frontend and API.
Authentication Best Practices — The Complete Guide
Master authentication security from password hashing to JWT tokens, OAuth 2.0, MFA, and session management. Learn how to build auth systems that protect your users.
CSRF (Cross-Site Request Forgery) — Understanding & Prevention
Learn how CSRF attacks exploit trusted sessions, how SameSite cookies and CSRF tokens defend against them, and when the frontend can or cannot protect you.
XSS (Cross-Site Scripting) Prevention — The Complete Guide
Learn how Cross-Site Scripting attacks work and how to prevent them. Covers Reflected, Stored, and DOM-based XSS with practical code examples, CSP headers, and React-specific protections.