Security guides your team can ship this week

Insecure cookies are one of the most common and exploitable misconfigurations in Node.js web applications. Understanding and correctly setting HttpOnly, Secure, and SameSite is non-negotiable for any session-handling application.

Content Security Policy is the most powerful XSS defense available, but it is also the header most likely to break third-party integrations. This guide shows you how to build a strict CSP in Next.js that works with Stripe, Google Analytics, fonts, and more.

Security headers are the fastest way to harden a Next.js application. This guide covers all seven essential headers with production-ready configuration for both App Router and Pages Router.

JWT vulnerabilities have led to authentication bypasses in major applications. This guide covers every known attack and how to write secure token handling code.

You do not need an enterprise budget to find serious security vulnerabilities on your website. These five free methods cover everything from TLS configuration to missing HTTP headers and vulnerable dependencies.

X-Frame-Options and CSP's frame-ancestors directive both prevent clickjacking by controlling how your page can be embedded in iframes. But they are not equivalent — one is a legacy header, the other is the modern standard. This guide explains the differences, which to use, and why you should set both.

Launching a website without a security checklist is how you end up fixing critical issues under pressure. This pre-launch guide covers every configuration to verify before flipping the switch.

TLS is the foundation of web security — but most developers configure it once and never look at it again. This guide covers the practical details: TLS 1.2 vs 1.3 differences, how to choose cipher suites, certificate validation mechanics, OCSP stapling, and the most common TLS misconfigurations that still show up in production.

REST API security is the backbone of modern web application defense. This guide covers every layer from HTTPS enforcement and JWT authentication to input validation, rate limiting, and safe error handling.