14 articles
Implement bulletproof JWT authentication with TypeScript. Covers access tokens, rotating refresh tokens, httpOnly cookies, token revocation, and production security hardening.
Implement OAuth 2.0 in Node.js with TypeScript. Covers authorization code flow, PKCE, social login with Google and GitHub, token exchange, and building your own OAuth server.
Master Passport.js authentication in Node.js with TypeScript. Covers local strategy, JWT, Google OAuth, session handling, and composing multiple strategies in Express.
Use Next.js Middleware to run authentication checks, route redirects, rate limiting, and locale detection at the edge before any page renders.
Learn how to implement production-ready authentication in Next.js 15 using NextAuth.js v5, covering OAuth providers, credentials login, magic links, middleware protection, and session management. For full-stack developers building secure applications.
Comprehensive API security guide for 2026 covering OWASP API Top 10, JWT best practices, CORS configuration, SQL injection prevention, and rate limiting. For developers building public APIs.
Design API gateways for rate limiting, JWT auth, request aggregation, and versioning. Learn gateway vs service mesh and Kong vs cloud vendors.
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.
Prevent algorithm confusion attacks, implement safe key rotation, detect token theft with refresh token families, and secure JWTs with binding and revocation strategies.
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.
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.
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.
Master WebAuthn registration and authentication flows. Learn resident credentials for usernameless login, device binding, attestation verification, and production-ready Node.js implementations.
Build zero trust backend with mTLS, SPIFFE identities, service-to-service JWT tokens, request signing, and dynamic database credentials via Vault.