HTTP Security Hardening
Free Security Headers & Cookie Checker
Validate that your web server transmits recommended defense-in-depth HTTP response headers against Cross-Site Scripting (XSS), Clickjacking, MIME-sniffing, and unencrypted transport.
Frequently Asked Questions
What is Content-Security-Policy (CSP)?
CSP is an HTTP header that restricts where resources (scripts, styles, images) can be loaded from, blocking unauthorized script execution and mitigating XSS attacks.
What does Strict-Transport-Security (HSTS) do?
HSTS instructs browsers to exclusively communicate with your server over encrypted HTTPS, preventing man-in-the-middle SSL stripping.
Are cookie values exposed in scan reports?
No! TestHive masks all sensitive cookie values (••••••••) and only inspects security attributes like Secure, HttpOnly, and SameSite.
Is a missing header considered a vulnerability?
Not necessarily — missing headers are reported as "security hardening opportunities" to improve defense-in-depth posture.