Secure Headers

Secure Headers refer to HTTP response headers that enhance web application security by controlling browser behavior and mitigating common vulnerabilities like cross-site scripting (XSS), clickjacking, and content injection. They are implemented on web servers to enforce security policies, such as Content Security Policy (CSP) and HTTP Strict Transport Security (HSTS), ensuring safer user interactions. This concept is crucial for modern web development to protect against attacks and comply with security standards.

Also known as: Security Headers, HTTP Security Headers, Web Security Headers, CSP Headers, HSTS Headers

Why learn Secure Headers?

Developers should learn and use Secure Headers when building or maintaining web applications to prevent security breaches and meet compliance requirements, such as OWASP guidelines or GDPR. Specific use cases include e-commerce sites handling sensitive data, banking applications requiring strict transport security, and any public-facing website to reduce risks of XSS and data leaks. Implementing headers like X-Frame-Options and Referrer-Policy helps safeguard user privacy and application integrity.

Learning Resources

• docs: OWASP Secure Headers Project
• docs: MDN Web Docs: HTTP Headers
• tutorial: Scott Helme's Security Headers Guide
• course: Coursera: Web Security Fundamentals
• video: YouTube: Secure Headers Explained by Fireship