HTTP Security Headers
spdns.de
Final status: 200 · Server: openresty
http://spdns.de (301)https://spdyn.de/ (200)
Security Headers
Strict-Transport-Security (HSTS) — missing
Forces browsers to use HTTPS, preventing protocol-downgrade attacks.
Content-Security-Policy (CSP)
Limits where scripts/resources can load from — the strongest defense against XSS.
X-Frame-Options DENY
Blocks the site from being embedded in iframes (clickjacking protection).
X-Content-Type-Options
Stops browsers from MIME-sniffing responses away from the declared type.
Referrer-Policy no-referrer
Controls how much referrer information is sent to other sites.
Permissions-Policy — missing
Restricts access to browser features like camera, microphone, geolocation.