What Web Security Headers Protect Against
HTTP response headers govern browser security context. A site without hardened response headers leaves visitors vulnerable to clickjacking, unauthorized script execution, and cookie theft even when HTTPS is properly configured.
Cross-Site Scripting (CSP)
Content-Security-Policy stops malicious script injection by defining an explicit allowlist of authorized script sources.
Clickjacking (XFO)
X-Frame-Options ensures malicious third-party websites cannot overlay invisible frames to hijack clicks and stolen sessions.
Cookie Hardening
Secure, HttpOnly, and SameSite attributes block JavaScript cookie theft and cross-site request forgery (CSRF).