Security Report Summary
R
Redirect: Click here to follow the redirect to https://www.mozilla.org/en-GB/.
Site: https://www.mozilla.org/
IP Address: 199.232.27.19
Report Time: 10 Jun 2026 03:17:45 UTC
Headers:
  • Strict-Transport-Security
  • X-Content-Type-Options
  • Referrer-Policy
  • Content-Security-Policy
  • X-Frame-Options
  • Permissions-Policy
Advanced:
Perform a deeper security analysis of your website and APIs:
Missing Headers
Content-Security-PolicyContent Security Policy is an effective measure to protect your site from XSS attacks. By whitelisting sources of approved content, you can prevent the browser from loading malicious assets.
X-Frame-OptionsX-Frame-Options tells the browser whether you want to allow your site to be framed or not. By preventing a browser from framing your site you can defend against attacks like clickjacking. Recommended value "X-Frame-Options: SAMEORIGIN".
Permissions-PolicyPermissions Policy is a new header that allows a site to control which features and APIs can be used in the browser.
Raw Headers
HTTP/2302
servergranian
strict-transport-securitymax-age=31536000
cross-origin-opener-policysame-origin
content-typetext/html; charset=utf-8
x-backend-serverbedrock-8697d5ff74-4ng6l.gcp-us-west1
x-content-type-optionsnosniff
referrer-policystrict-origin-when-cross-origin
location/en-GB/
via1.1 google, 1.1 varnish, 1.1 varnish
accept-rangesbytes
age0
dateWed, 10 Jun 2026 03:17:45 GMT
x-served-bycache-dub4346-DUB, cache-dub4346-DUB, cache-dub4388-DUB
x-cacheMISS, MISS
x-cache-hits0, 0
x-timerS1781061465.936079,VS0,VE193
varyAccept-Language
content-length0
Upcoming Headers
Cross-Origin-Embedder-PolicyCross-Origin Embedder Policy allows a site to prevent assets being loaded that do not grant permission to load them via CORS or CORP.
Cross-Origin-Resource-PolicyCross-Origin Resource Policy allows a resource owner to specify who can load the resource.
Additional Information
serverServer value has been changed. Typically you will see values like "Microsoft-IIS/8.0" or "nginx 1.7.2".
strict-transport-securityHTTP Strict Transport Security is an excellent feature to support on your site and strengthens your implementation of TLS by getting the User Agent to enforce the use of HTTPS.
cross-origin-opener-policyCross-Origin Opener Policy allows a site to opt-in to Cross-Origin Isolation in the browser.
x-content-type-optionsX-Content-Type-Options stops a browser from trying to MIME-sniff the content type and forces it to stick with the declared content-type. The only valid value for this header is "X-Content-Type-Options: nosniff".
referrer-policyReferrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites.