Security guides your team can ship this week

Seven simple tests to verify any website's security in minutes. No technical background needed.

Content Security Policy is the most powerful browser security mechanism available — and the most commonly misconfigured. This guide walks through every directive with real-world examples, shows you how to build a CSP that doesn't break your site, and explains how to use report-uri to catch violations before they become problems.

HTTP security headers are free, fast to deploy, and fix a wide range of browser-level vulnerabilities. This guide covers all seven essential headers, what each one does, how to add them to your server, and how to verify they are working.

Learn how to configure Content Security Policy headers step by step. Prevent XSS attacks, data injection, and clickjacking with real-world examples.

A website security score gives you a single number that summarises how well your site is protected. This guide breaks down how the score is calculated, what the different ranges mean, and which fixes will move the needle fastest.

Squarespace handles more security infrastructure than most platforms — but understanding the boundary between what it manages and what you own is essential for a truly secure site.

12 concrete API security checks every developer should run, with Express and FastAPI code examples — from authentication to rate limiting to error handling.

Financial websites are high-value targets with strict compliance requirements. This guide covers the technical security controls every fintech team needs to implement — and audit continuously.

An open redirect vulnerability allows attackers to weaponize your trusted domain for phishing campaigns, OAuth token theft, and SSRF chains. This guide explains how they work and how to eliminate them.