Security Headers Report

• Pass

  Strict-Transport-Security HSTS

  15/15 15/15

  Tells browsers to only use HTTPS for all future requests. Prevents protocol downgrade attacks and cookie hijacking.

  max-age=31536000; includeSubdomains; preload
  • max-age is at least one year, as recommended.
  • includeSubDomains is set.
  • preload is set, so the site is eligible for the HSTS preload list.
• Pass

  X-Frame-Options XFO

  8/8 8/8

  Protects against clickjacking by controlling whether the site can be embedded in iframes. Largely superseded by CSP frame-ancestors but still widely supported.

  deny
  • DENY is the most restrictive setting. Pages can not be embedded anywhere.
• Pass

  X-Content-Type-Options XCTO

  8/8 8/8

  Prevents browsers from MIME-sniffing a response away from the declared content type, reducing exposure to drive-by download attacks.

  nosniff
  • nosniff is set correctly.
• Warning

  Content-Security-Policy CSP

  21/25 21/25

  The most powerful security header. It controls which resources the browser may load, which mitigates XSS, data injection and other code injection attacks.

  default-src 'none'; base-uri 'self'; child-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/; connect-src 'self' uploads.github.com www.githubstatus.com collector.github.com raw.githubusercontent.com api.github.com github-cloud.s3.amazonaws.com github-production-repository-file-5c1aeb.s3.amazonaws.com github-production-upload-manifest-file-7fdce7.s3.amazonaws.com github-production-user-asset-6210df.s3.amazonaws.com *.rel.tunnels.api.visualstudio.com wss://*.rel.tunnels.api.visualstudio.com github.githubassets.com objects-origin.githubusercontent.com copilot-proxy.githubusercontent.com proxy.individual.githubcopilot.com proxy.business.githubcopilot.com proxy.enterprise.githubcopilot.com *.actions.githubusercontent.com wss://*.actions.githubusercontent.com productionresultssa0.blob.core.windows.net productionresultssa1.blob.core.windows.net productionresultssa2.blob.core.windows.net productionresultssa3.blob.core.windows.net productionresultssa4.blob.core.windows.net productionresultssa5.blob.core.windows.net productionresultssa6.blob.core.windows.net productionresultssa7.blob.core.windows.net productionresultssa8.blob.core.windows.net productionresultssa9.blob.core.windows.net productionresultssa10.blob.core.windows.net productionresultssa11.blob.core.windows.net productionresultssa12.blob.core.windows.net productionresultssa13.blob.core.windows.net productionresultssa14.blob.core.windows.net productionresultssa15.blob.core.windows.net productionresultssa16.blob.core.windows.net productionresultssa17.blob.core.windows.net productionresultssa18.blob.core.windows.net productionresultssa19.blob.core.windows.net productionresultssa30.blob.core.windows.net productionresultssa31.blob.core.windows.net productionresultssa32.blob.core.windows.net github-production-repository-image-32fea6.s3.amazonaws.com github-production-release-asset-2e65be.s3.amazonaws.com insights.github.com wss://alive.github.com wss://alive-staging.github.com api.githubcopilot.com api.individual.githubcopilot.com api.business.githubcopilot.com api.enterprise.githubcopilot.com wss://production-copilot-host.webpubsub.azure.com wss://production-copilot-host-centralus.webpubsub.azure.com wss://production-copilot-host-centralus-02.webpubsub.azure.com wss://production-copilot-host-westus.webpubsub.azure.com wss://production-copilot-host-westus3.webpubsub.azure.com wss://production-copilot-host-eastasia.webpubsub.azure.com wss://production-copilot-host-austriaeast.webpubsub.azure.com api.github.com/cmc_internal/api/ edge.fullstory.com rs.fullstory.com; font-src github.githubassets.com; form-action 'self' github.com gist.github.com copilot-workspace.githubnext.com objects-origin.githubusercontent.com; frame-ancestors 'none'; frame-src viewscreen.githubusercontent.com notebooks.githubusercontent.com www.youtube-nocookie.com; img-src 'self' data: blob: github.githubassets.com media.githubusercontent.com camo.githubusercontent.com identicons.github.com avatars.githubusercontent.com private-avatars.githubusercontent.com github-cloud.s3.amazonaws.com objects.githubusercontent.com release-assets.githubusercontent.com secured-user-images.githubusercontent.com user-images.githubusercontent.com private-user-images.githubusercontent.com opengraph.githubassets.com repository-images.githubusercontent.com marketplace-screenshots.githubusercontent.com copilotprodattachments.blob.core.windows.net/github-production-copilot-attachments/ github-production-user-asset-6210df.s3.amazonaws.com customer-stories-feed.github.com spotlights-feed.github.com explore-feed.github.com *.googleusercontent.com objects-origin.githubusercontent.com *.githubusercontent.com images.ctfassets.net/8aevphvgewt8/; manifest-src 'self'; media-src github.com user-images.githubusercontent.com secured-user-images.githubusercontent.com private-user-images.githubusercontent.com github-production-user-asset-6210df.s3.amazonaws.com gist.github.com github.githubassets.com assets.ctfassets.net/8aevphvgewt8/ videos.ctfassets.net/8aevphvgewt8/; script-src github.githubassets.com 'sha256-6AKuI+cDd1MoUL1u4eqrA9PXmnPAkOB4h7421hPUUm0='; style-src 'unsafe-inline' github.githubassets.com; upgrade-insecure-requests; worker-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/
  • 'unsafe-inline' is present, which weakens XSS protection. Use nonces or hashes instead.
  • No 'unsafe-eval' was found.
  • The default-src fallback directive is set.
  • frame-ancestors is set, which controls iframe embedding at the CSP level.
  • upgrade-insecure-requests is set.
  • base-uri is set, which prevents base tag injection.
• Pass

  Referrer-Policy RP

  8/8 8/8

  Controls how much referrer information is sent with requests. Restricting it protects user privacy and avoids leaking sensitive URLs.

  origin-when-cross-origin, strict-origin-when-cross-origin
  • The policy is a safe choice.
  • This is the recommended balanced policy.
• Fail

  Permissions-Policy PP

  0/8 0/8

  Controls access to browser features and APIs such as the camera, microphone and geolocation. Replaces the deprecated Feature-Policy header.

  Not set
  • Permissions-Policy is missing. Scripts may use browser features like the camera, microphone and geolocation without restriction.
  Recommended

  Permissions-Policy: accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()

• Pass

  X-XSS-Protection XXP

  5/5 5/5

  Legacy header for the XSS filter in older browsers. Modern browsers ignore it and a strong CSP is preferred. A wrong value can introduce vulnerabilities.

  0
  • It is set to 0, the correct modern value, which turns off the buggy legacy XSS filter.
• Fail

  Cross-Origin-Embedder-Policy COEP

  0/7 0/7

  Prevents a document from loading cross-origin resources that do not explicitly grant permission. Required for cross-origin isolation.

  Not set
  • COEP is not set. It is required for cross-origin isolation, which enables features like SharedArrayBuffer.
  Recommended

  Cross-Origin-Embedder-Policy: require-corp

• Fail

  Cross-Origin-Opener-Policy COOP

  0/7 0/7

  Isolates the browsing context group, which protects against cross-origin attacks such as XS-Leaks and Spectre.

  Not set
  • COOP is not set. The browsing context is not isolated, which leaves the site open to XS-Leaks and Spectre-style attacks.
  Recommended

  Cross-Origin-Opener-Policy: same-origin

• Fail

  Cross-Origin-Resource-Policy CORP

  0/7 0/7

  Says whether other sites may include the resource, which protects against some cross-origin information leaks and side-channel attacks.

  Not set
  • CORP is not set. Other sites may be able to include your resources, which can enable information leaks.
  Recommended

  Cross-Origin-Resource-Policy: same-origin

These response headers may reveal details about the server software and technology stack, which helps attackers plan an attack.

• medium

  Server

  github.com

  Remove or mask the Server header so it does not disclose the web server software and version.