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 SAMEORIGIN 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 — Good Control resources the user agent is allowed to load for a given page. Click to learn more... Referrer-Policy same-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 — 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 geolocation 'self'Deprecated Deprecated. Replaced by the Permissions-Policy header. Click to learn more... Expect-CT max-age =86400; enforce 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...