Strict-Transport-Security max-age =31536000Good Declare that a website is only accessible over a secure connection (HTTPS). Click to learn more... X-Frame-Options DENY Good Indicate whether a browser should be allowed to render a page in a <frame>, <iframe>, <embed> or <object>. Click to learn more... X-Content-Type-Options nosniff Good Indicate that the MIME types advertised in the Content-Type headers should be followed and not be changed. Click to learn more... Content-Security-Policy default-src 'none'; script-src 'none'; style-src 'none'; img-src 'none'; font-src 'none'; connect-src 'none'; media-src 'none'; object-src 'none'; prefetch-src 'none'; child-src 'none'; frame-src 'none'; worker-src 'none'; frame-ancestors 'none'; form-action 'none'; manifest-src 'none'Good Control resources the user agent is allowed to load for a given page. Click to learn more... Referrer-Policy strict-origin-when-cross-origin Good Control how much referrer information should be included with requests. Click to learn more... Clear-Site-Data — Good Control the data stored by a client browser for their origins. Click to learn more... X-Permitted-Cross-Domain-Policies — Good Control whether a web client such as Adobe Flash Player or Adobe Acrobat has permission to handle data across domains. Click to learn more... Permissions-Policy accelerometer =(); ambient-light-sensor =(); autoplay =(); battery =(); browsing-topics =(); camera =(); cross-origin-isolated =(); display-capture =(); document-domain =(); encrypted-media =(); execution-while-not-rendered =(); execution-while-out-of-viewport =(); fullscreen =(); geolocation =(); gyroscope =(); keyboard-map =(); magnetometer =(); microphone =(); midi =(); navigation-override =(); payment =(); picture-in-picture =(); publickey-credentials-get =(); screen-wake-lock =(); sync-xhr =(); usb =(); web-share =(); xr-spatial-tracking =()New Allow and deny the use of browser features in a document or iframe. Click to learn more... Cross-Origin-Embedder-Policy — New Configure embedding cross-origin resources into the document. Click to learn more... Cross-Origin-Opener-Policy — New Ensure a top-level document does not share a browsing context group with cross-origin documents. Click to learn more... Cross-Origin-Resource-Policy — New Request that the browser blocks no-cors cross-origin/cross-site requests to the given resource. Click to learn more... X-XSS-Protection 1 ; mode =blockDeprecated Deprecated. Stops pages from loading when they detect reflected cross-site scripting (XSS) attacks. Click to learn more... Feature-Policy accelerometer 'none'; autoplay 'none'; camera 'none'; document-domain 'none'; encrypted-media 'none'; fullscreen 'none'; geolocation 'none'; gyroscope 'none'; magnetometer 'none'; microphone 'none'; midi 'none'; payment 'none'; picture-in-picture 'none'; screen-wake-lock 'none'; sync-xhr 'none'; usb 'none'; xr-spatial-tracking 'none'Deprecated Deprecated. Replaced by the Permissions-Policy header. Click to learn more... Expect-CT — Deprecated Deprecated. Opt in to reporting and/or enforcement of Certificate Transparency requirements. Click to learn more... Public-Key-Pins — Deprecated Deprecated. Allows HTTPS websites to resist impersonation by attackers using mis-issued or otherwise fraudulent certificates. Click to learn more...