CyberBouncer - free website security scanner

Paste any URL and CyberBouncer runs an instant, non-intrusive security sweep - checking TLS/SSL, HTTP security headers, cookie flags, DNS email authentication (SPF and DMARC), and reputation - then grades the site from A to F with a plain-English report and concrete fixes. Free, no login required.

What CyberBouncer checks

• HTTPS / TLS configuration and certificate validity
• HTTP security headers: HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy
• Cookie flags: Secure, HttpOnly, SameSite
• Email authentication DNS records: SPF and DMARC
• Threat reputation and server fingerprint

Check a site before you visit it, test sites you are building before they ship, or sign in to monitor sites continuously. We check IDs at the door.