Strict-Transport-Security | max-age=31536000 | Good | Declare that a website is only accessible over a secure connection (HTTPS).
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X-Frame-Options | SAMEORIGIN | Good | Indicate whether a browser should be allowed to render a page in a <frame>, <iframe>, <embed> or <object>.
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X-Content-Type-Options | nosniff | Good | Indicate that the MIME types advertised in the Content-Type headers should be followed and not be changed.
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Content-Security-Policy | default-src 'self'; font-src 'self' https://fonts.gstatic.com; img-src 'self' https://secure.gaug.es https://gravatar.com https://www.gravatar.com https://secure.gravatar.com https://*.fastly-insights.com https://avatars.githubusercontent.com; object-src 'none'; script-src 'self' 'sha256-+uapLikAlYF9sZ3AxuZSlxj5CODf4ndQXTQSaE5pJfw=' https://secure.gaug.es https://www.fastly-insights.com 'nonce-ba6a09809b42785338c55c363dfcd22e'; style-src 'self' https://fonts.googleapis.com 'nonce-ba6a09809b42785338c55c363dfcd22e'; connect-src 'self' https://s3-us-west-2.amazonaws.com/rubygems-dumps/ https://*.fastly-insights.com https://fastly-insights.com https://api.github.com http://localhost:*; form-action 'self' https://github.com/login/oauth/authorize; frame-ancestors 'self'; base-uri 'self'; report-uri https://csp-report.browser-intake-datadoghq.com/api/v2/logs?dd-api-key=pub852fa3e2312391fafa5640b60784e660&dd-evp-origin=content-security-policy&ddsource=csp-report&ddtags=service%3Arubygems.org%2Cversion%3A8021e2eb47fdabbb08af2cc57e52e24756236cb2%2Cenv%3Aproduction%2Ctrace_id%3A3805087954806122607 | Good | Control resources the user agent is allowed to load for a given page.
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Referrer-Policy | strict-origin-when-cross-origin | Good | Control how much referrer information should be included with requests.
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Clear-Site-Data | — | Good | Control the data stored by a client browser for their origins.
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X-Permitted-Cross-Domain-Policies | none | Good | Control whether a web client such as Adobe Flash Player or Adobe Acrobat has permission to handle data across domains.
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Permissions-Policy | — | New | Allow and deny the use of browser features in a document or iframe.
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Cross-Origin-Embedder-Policy | — | New | Configure embedding cross-origin resources into the document.
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Cross-Origin-Opener-Policy | same-origin | New | Ensure a top-level document does not share a browsing context group with cross-origin documents.
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Cross-Origin-Resource-Policy | — | New | Request that the browser blocks no-cors cross-origin/cross-site requests to the given resource.
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X-XSS-Protection | 0 | Deprecated | Deprecated. Stops pages from loading when they detect reflected cross-site scripting (XSS) attacks.
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Feature-Policy | — | Deprecated | Deprecated. Replaced by the Permissions-Policy header.
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Expect-CT | — | Deprecated | Deprecated. Opt in to reporting and/or enforcement of Certificate Transparency requirements.
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Public-Key-Pins | — | Deprecated | Deprecated. Allows HTTPS websites to resist impersonation by attackers using mis-issued or otherwise fraudulent certificates.
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