Security Report Summary
A
Site: https://proton.me/mail
IP Address: 185.70.42.45
Report Time: 12 May 2025 17:11:15 UTC
Headers:
  • Content-Security-Policy
  • Strict-Transport-Security
  • X-Content-Type-Options
  • Referrer-Policy
  • X-Frame-Options
  • Permissions-Policy
Warning: Grade capped at A, please see warnings below.
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Missing Headers
Permissions-PolicyPermissions Policy is a new header that allows a site to control which features and APIs can be used in the browser.
Warnings
Content-Security-PolicyThis policy contains 'unsafe-inline' which is dangerous in the script-src directive. This policy contains 'unsafe-eval' which is dangerous in the script-src directive.
Raw Headers
HTTP/2200
dateMon, 12 May 2025 17:11:14 GMT
set-cookieSession-Id=aCIrsmd9-ichdUl9TUiarwAAAIQ; Domain=proton.me; Path=/; HttpOnly; SameSite=None; Secure; Max-Age=7776000
set-cookieTag=default; Path=/; SameSite=None; Secure; Max-Age=7776000
set-cookieFeatures=MailHomeNewCenteredHero280425:B; HttpOnly; SameSite=lax; Secure; Max-Age=7776000000; Path=/
last-modifiedMon, 12 May 2025 11:55:30 GMT
etag"33c8c-634eefe165080-gzip"
accept-rangesbytes
varyAccept-Encoding
content-encodinggzip
cache-controlno-store, no-cache, must-revalidate, proxy-revalidate
content-length27333
content-typetext/html; charset=utf-8
x-ab-variantB
pragmano-cache
expires0
content-security-policydefault-src 'self'; media-src https://static.zdassets.com https://res.cloudinary.com https://pmecdn.protonweb.com; connect-src 'self' wss: https://protonmail.zendesk.com https://ekr.zdassets.com blob: https://account.proton.me https://reports.proton.me https://telemetry.proton.me https://*.algolia.net https://*.algolianet.com https://go.getproton.me https://noembed.com https://boards-api.greenhouse.io https://proton.me; script-src 'self' blob: 'unsafe-eval' 'unsafe-inline' https://static.zdassets.com https://pmecdn.protonweb.com https://www.youtube.com https://platform.twitter.com; style-src 'self' 'unsafe-inline' https://pmecdn.protonweb.com; font-src 'self' https://pmecdn.protonweb.com; img-src 'self' data: blob: https:; frame-src 'self' data: blob: https://www.youtube-nocookie.com https://platform.twitter.com; object-src 'self' data: blob:; child-src 'self' data: blob:; report-uri https://reports.proton.me/reports/csp; frame-ancestors 'self' https://*.proton.me;
strict-transport-securitymax-age=31536000; includeSubDomains; preload
public-key-pins-report-onlypin-sha256="CT56BhOTmj5ZIPgb/xD5mH8rY3BLo/MlhP7oPyJUEDo="; pin-sha256="35Dx28/uzN3LeltkCBQ8RHK0tlNSa2kCpCRGNp34Gxc="; report-uri="https://reports.proton.me/reports/tls"
x-content-type-optionsnosniff
x-xss-protection0
referrer-policystrict-origin-when-cross-origin
x-permitted-cross-domain-policiesnone
X-Frame-OptionsHeader not set, see Additional Information below.
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-Opener-PolicyCross-Origin Opener Policy allows a site to opt-in to Cross-Origin Isolation in the browser.
Cross-Origin-Resource-PolicyCross-Origin Resource Policy allows a resource owner to specify who can load the resource.
Additional Information
set-cookieThere is no Cookie Prefix on this cookie. This is not a SameSite Cookie.
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. Analyse this policy in more detail. You can sign up for a free account on Report URI to collect reports about problems on your site.
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.
public-key-pins-report-onlyHTTP Public Key Pinning Report Only allows a host to test the effects of a HPKP policy before making it live. The browser will report on actions that would have been taken if the policy were live so a host can see what effect it would have. Analyse this policy in more detail.
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".
x-xss-protectionX-XSS-Protection sets the configuration for the XSS Auditor built into older browsers. The recommended value was "X-XSS-Protection: 1; mode=block" but you should now look at Content Security Policy instead.
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.
X-Frame-OptionsThe XFO header was not sent but frame-ancestors in Content Security Policy was used instead.