nextjs5 min read
Next.js Middleware — Authentication and Routing
Use middleware for authentication, request logging, and conditional routing.
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Authentication
14 articles
nextjs5 min read
Next.js Authentication — NextAuth.js v5 Guide
Implement secure authentication with NextAuth.js v5 supporting OAuth, credentials, and magic links.
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jwt4 min read
JWT Authentication — Complete Implementation
Implement JWT authentication securely. Token generation, verification, refresh tokens, and best practices.
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oauth23 min read
OAuth 2.0 — Complete Guide for Developers
Master OAuth 2.0 for third-party authentication. Authorization Code flow, social login, and best practices.
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passport2 min read
Passport.js — Authentication Middleware Guide
Master Passport.js for flexible authentication. Local strategy, social login, and middleware integration.
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security6 min read
API Security Complete Guide 2026: OWASP Top 10, JWT, CORS, and Rate Limiting
Secure your APIs in 2026: OWASP Top 10 for APIs, SQL injection prevention, JWT best practices, CORS configuration, input validation, rate limiting, and security headers. With code examples.
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api-gateway10 min read
API Gateway Patterns — Rate Limiting, Auth, and Request Transformation at the Edge
Design API gateways for rate limiting, JWT auth, request aggregation, and versioning. Learn gateway vs service mesh and Kong vs cloud vendors.
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backend6 min read
Clock Skew Breaking Tokens — When Servers Disagree on What Time It Is
Server A issues a JWT. Server B validates it 2 seconds later but thinks the token was issued in the future — invalid. Or a token that should be expired is still accepted because the validating server''s clock is 5 minutes behind. Clock skew causes authentication failures and security holes.
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JWT7 min read
JWT Security Pitfalls — Algorithm Confusion, Key Rotation, and Token Theft Prevention
Prevent algorithm confusion attacks, implement safe key rotation, detect token theft with refresh token families, and secure JWTs with binding and revocation strategies.
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authentication8 min read
JWT vs Session Tokens — Choosing the Right Authentication Strategy in 2026
Understand JWT stateless tradeoffs, session cookie security, token refresh rotation, and hybrid approaches. Learn when to use JWTs for service-to-service auth and why short TTLs matter.
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oauth28 min read
OAuth 2.0 With PKCE — Secure Authorization Code Flow for SPAs and Mobile Apps
Master PKCE (Proof Key for Public Clients) for JavaScript SPAs and mobile apps. Learn code verifier generation, state parameters, token storage, refresh flows, and scope design.
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API Security8 min read
OWASP API Security Top 10 — With Real Fixes for Each Vulnerability
Deep dive into OWASP API Security Top 10 vulnerabilities with production-ready fixes: BOLA, broken auth, data exposure, rate limiting, function level auth, and more.
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authentication7 min read
Passkeys and WebAuthn — Replacing Passwords With Phishing-Resistant Authentication
Master WebAuthn registration and authentication flows. Learn resident credentials for usernameless login, device binding, attestation verification, and production-ready Node.js implementations.
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Zero Trust9 min read
Zero Trust Backend Architecture — Never Trust, Always Verify Between Services
Build zero trust backend with mTLS, SPIFFE identities, service-to-service JWT tokens, request signing, and dynamic database credentials via Vault.
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