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Analyze HTTP security headers for github.com. Check which security headers are present and identify missing protections.
HTTP security headers are special response headers that web servers send to browsers to enforce security policies. When you visit github.com, the server responds with headers that tell your browser how to handle the content securely. Key security headers include Strict-Transport-Security (HSTS) which forces HTTPS connections, Content-Security-Policy (CSP) which prevents cross-site scripting attacks, X-Frame-Options which prevents clickjacking, X-Content-Type-Options which prevents MIME type sniffing, Referrer-Policy which controls information leakage, and Permissions-Policy which restricts browser features.
Missing security headers leave github.com vulnerable to client-side attacks. Without HSTS, users could be downgraded to insecure HTTP connections. Without CSP, the site is exposed to cross-site scripting (XSS) attacks. Without X-Frame-Options, attackers could embed github.com in an iframe for clickjacking attacks. These headers are a critical layer of defense that complement server-side security measures and are evaluated by security scanners, penetration testers, and browser security audits.
Security header configuration for github.com depends on its web server setup. Check the live results above to see which security headers github.com has enabled, including HSTS, Content-Security-Policy, X-Frame-Options, and more.
Protection against clickjacking requires the X-Frame-Options or Content-Security-Policy frame-ancestors header. XSS protection is handled by Content-Security-Policy (CSP). Check the live analysis above to see if github.com has these headers configured correctly.
HTTP security headers are response headers that web servers send to browsers to enforce security policies. They protect against common attacks like clickjacking (X-Frame-Options), cross-site scripting (Content-Security-Policy), protocol downgrade attacks (Strict-Transport-Security), and MIME type sniffing (X-Content-Type-Options). Without proper security headers, a website is vulnerable to a wide range of client-side attacks, even if the server-side code is secure.