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39 articles
Your free-tier AI image generation endpoint is being used to generate 50,000 images per day by one account. Your "send email" endpoint is being used as a spam relay. Your "convert PDF" API is a free conversion service for strangers. Public endpoints need abuse controls.
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.
Build secure multi-tenant AI systems with tenant isolation, per-tenant prompts, cost tracking, and prevent cross-tenant data leakage in production.
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. They''re paying your cloud bill while your real users experience slowness.
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 (Trivy), SBOM generation (Syft), image signing (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.
Build minimal, secure, fast Docker images with multi-stage builds, distroless bases, BuildKit, and supply chain security via cosign and SBOM.
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.