56 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.
Implement production-grade rate limiting in Node.js with TypeScript. Covers fixed window, sliding window, token bucket algorithms, Redis-backed distributed limiting, and per-route strategies.
Build an AI code review system using GPT-4o: automated bug detection, security scanning, GitHub Actions PR comments, pre-commit hooks, and custom rule sets. Complete Python implementation included.
How to use ChatGPT effectively for code review, including prompt templates, security audits, and integrating AI review into your CI/CD pipeline. For developers and engineering teams.
AI tools can identify SQL injection, XSS, insecure authentication, and other OWASP Top 10 vulnerabilities in code reviews. This guide covers how to use AI security review effectively, what it catches reliably, and where human expertise is still required.
Implement DevSecOps in 2026 with GitHub Actions: SAST via CodeQL, dependency scanning with Snyk, secrets detection with Gitleaks, container scanning with Trivy, SBOM generation, and hardened Dockerfiles.
Master HashiCorp Vault in 2026 with dynamic database credentials, Kubernetes auth via ServiceAccounts, Transit encryption-as-a-service, PKI certificate management, and Vault in GitHub Actions CI/CD pipelines.
A production-grade Docker checklist covering image size, security hardening, layer caching, health checks, and runtime best practices. Essential reading before deploying containers to any cloud environment.
A comprehensive Docker security guide covering non-root containers, image scanning, secrets management, read-only filesystems, capabilities, and seccomp profiles. Essential for teams shipping containers to production.
A detailed comparison of Docker and Podman in 2025: daemonless architecture, rootless containers, Docker compatibility, Kubernetes integration, and which tool fits different team workflows. With real migration examples.
Learn how to securely manage secrets, environment variables, and deployment environments in GitHub Actions. Covers repository secrets, environment protection rules, OIDC federation, and secrets rotation best practices.
A comprehensive guide to SSH key generation, configuration, and hardening for DevOps engineers — covering Ed25519 keys, SSH config files, agent forwarding, key rotation, and server hardening. For engineers managing secure server access at scale.
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.
Public endpoints that provide real compute value attract systematic abuse — AI generation endpoints, email relays, SMS OTPs, and file converters are all targets. This guide covers per-account quotas, SMS pumping prevention, anomaly detection, and real-time abuse killing.
Build secure multi-tenant AI systems that isolate data, prompts, and vector stores per tenant. Covers cost tracking, rate limiting, and cross-tenant leakage prevention in production.
Docker best practices have matured in 2026: multi-stage builds, rootless containers, layer caching strategies, and security scanning are now table stakes. Learn what production-grade Dockerfiles look like and where teams still get it wrong.
Comprehensive authentication guide for 2026 covering NextAuth v5 setup, OAuth providers, JWT patterns, middleware-based route protection, and Clerk as a managed alternative.
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.
Secure AI agents against prompt injection, indirect attacks via tool results, unauthorized tool use, and data exfiltration with sandboxing and audit logs.
Why AI code generators introduce security vulnerabilities, how to audit AI-generated code, and techniques to prompt LLMs for security-first implementations.
Comprehensive guide to red teaming LLMs including jailbreak testing, prompt injection, bias testing, adversarial robustness, and privacy attacks.
You have rate limiting. 100 requests per minute per IP. The attacker uses 100 IPs. Your rate limit is bypassed. Effective rate limiting requires multiple dimensions — IP, user account, device fingerprint, and behavioral signals — not just one.
Deep dive into the OWASP API Security Top 10 2023, how AI changes the threat landscape, and practical mitigation strategies for modern backends.
Your API logs show 10,000 requests per minute. Your analytics show 50 active users. The other 9,950 RPM is bots — scrapers, credential stuffers, inventory hoarders, and price monitors paying your cloud bill while slowing real users down.
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.
Harden container images with multi-stage builds, distroless images, non-root users, vulnerability scanning with Trivy, SBOM generation with Syft, image signing with Cosign, and admission controllers to block unsigned images.
Build secure containers with non-root users, distroless base images, multi-stage builds, and runtime security. Learn seccomp profiles, image scanning, SBOM generation.
Master CORS security: preflight flow, origin reflection attacks, credential handling, CDN caching pitfalls, and subdomain takeover exploits.
Traffic spikes 100x in 5 minutes. Is it a DDoS attack, or did you make the front page of Hacker News? The response is completely different. Block the attack too aggressively and you block your most engaged new users. Don't block fast enough and the attack takes you down.
Secure your Node.js supply chain: npm audit in CI, Dependabot configuration, lockfile integrity, typosquatting detection, SBOM generation, and private registries.
A developer pushes a quick test with a hardcoded API key. Three months later, that key is in 47 forks, indexed by GitHub search, and being actively used by a botnet. Secrets in version control are a permanent compromise — git history doesn't forget.
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.
Implement zero-trust networking with Kubernetes NetworkPolicies. Learn default-deny patterns, label-based pod selection, DNS egress, multi-namespace policies, and testing with netshoot.
Stop storing base64-encoded secrets in etcd. Evaluate External Secrets Operator, HashiCorp Vault, Sealed Secrets, and secret rotation strategies for GitOps-native Kubernetes deployments.
Detect and redact PII before sending to LLMs, pseudonymize sensitive data, and maintain GDPR compliance with privacy-preserving AI.
A user sends 10,000 requests per minute to your API. No rate limiting. Your server CPU spikes to 100%. Your database runs out of connections. Every other user sees 503s. One script can take down your entire service — and it happens more often than you think.
Node 22 makes the permission model stable. Restrict file system, network, and child process access with --allow-fs-read, --allow-net, and more. Essential for multi-tenant systems.
Harden Node.js with Helmet.js headers, rate limiting with Redis, SQL injection prevention, prototype pollution fixes, audit automation, privilege dropping, and --frozen-intrinsics.
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.
How to implement passkeys and WebAuthn in production, store credentials securely, handle cross-device authentication, and design fallback strategies.
Master WebAuthn registration and authentication flows. Learn resident credentials for usernameless login, device binding, attestation verification, and production-ready Node.js implementations.
Comprehensive penetration testing checklist: IDOR, authentication bypass, rate limiting, XXE, SSRF, mass assignment, GraphQL introspection, API fuzzing, and ZAP integration.
Learn to defend against direct and indirect prompt injection attacks using input sanitization, system prompt isolation, and detection mechanisms.
Defend against prompt injection: direct vs indirect attacks, input sanitization, system prompt isolation, output validation, sandboxed execution, and rate limiting.
Stop using .env files. Compare HashiCorp Vault, AWS Secrets Manager, Infisical, and Doppler for production secret management with rotation and audit trails.
The $500k enterprise deal requires a SOC 2 audit. Your app has hardcoded secrets, no MFA, plain-text passwords in logs, and no audit trail. You have six weeks. This is what a security sprint actually looks like.
Deploy Istio service mesh for automatic mTLS, traffic management, and observability. Learn sidecar injection, mTLS enforcement, canary deployments with VirtualService, circuit breaking, distributed tracing, and when a service mesh is overkill.
SOC 2 Type II requirements for engineering teams: what auditors check, what infrastructure to build, automated compliance evidence, and realistic timelines.
SQL injection persists in ORM applications. Learn why raw(), $executeRaw(), and stored procedures are injection vectors, and how to defend with parameterization.
Prevent SSRF attacks that steal cloud credentials: URL validation, IP blocking, DNS rebinding defense, and AWS IMDSv2 hardening.
Build reliable webhook systems with HMAC-SHA256 signatures, idempotency keys, exponential backoff, dead-letter queues, and production testing patterns.
Implementing zero trust security for microservices: mTLS, service identities, fine-grained policies, and short-lived credentials without downtime.
Security vulnerabilities can destroy your app, your users, and your reputation overnight. This guide covers the most critical web security threats — XSS, SQL Injection, CSRF, broken auth — and exactly how to prevent them with code examples.