Security Report Summary
A
Site: https://securityheaders.io/?q=https://email.t-online.de/em
IP Address: 2604:a880:1:20::7e:3001
Report Time: 29 Apr 2017 09:17:17 UTC
Report Short URL: https://schd.io/2PO
Headers:
  • Content-Security-Policy
  • Public-Key-Pins
  • Strict-Transport-Security
  • X-Frame-Options
  • X-XSS-Protection
  • X-Content-Type-Options
  • Referrer-Policy
Raw Headers
HTTP/1.1200 OK
Serversecurityheaders.io
DateSat, 29 Apr 2017 09:17:16 GMT
Content-Typetext/html; charset=UTF-8
Transfer-Encodingchunked
Connectionkeep-alive
VaryAccept-Encoding
X-ScoreeyJzY29yZSI6IlIiLCAiY29sb3VyIjoiZ3JleSJ9
X-GradeR
Access-Control-Allow-Origin*
Access-Control-Expose-Headersx-score, x-grade
Access-Control-Allow-MethodsGET, HEAD
Content-Security-Policydefault-src 'self'; script-src 'self' https://securityheaders.azureedge.net https://ajax.googleapis.com https://www.google-analytics.com https://bam.nr-data.net https://js-agent.newrelic.com https://cdnjs.cloudflare.com; img-src 'self' https://securityheaders.azureedge.net https://www.google-analytics.com; style-src 'self' 'unsafe-inline' https://securityheaders.azureedge.net https://fonts.googleapis.com https://cdnjs.cloudflare.com; font-src 'self' https://fonts.gstatic.com https://cdnjs.cloudflare.com; form-action 'self'; report-uri https://scotthelme.report-uri.io/r/default/csp/enforce
Content-Security-Policy-Report-Onlydefault-src 'none'; script-src 'self' ajax.googleapis.com www.google-analytics.com cdnjs.cloudflare.com; img-src 'self' www.google-analytics.com; style-src 'self' 'unsafe-inline' fonts.googleapis.com cdnjs.cloudflare.com; font-src 'self' fonts.gstatic.com cdnjs.cloudflare.com; form-action 'self'; base-uri 'self'; frame-ancestors 'none'; reflected-xss block; require-sri-for script style; upgrade-insecure-requests; report-uri https://scotthelme.report-uri.io/r/default/csp/reportOnly
Public-Key-Pinspin-sha256="NoUyjTJDUXG/d34HHx/BIv0OJbTSIFLU3k1y2tuSxfM="; pin-sha256="PTra4ikctYwyb+kz2psrGgiYyVY2YlSejkMqP1Zc/K4="; pin-sha256="JE3+0FyqJ+07dr4PvTuuryPH3nLOBZUXhyKEbOpUyAE="; pin-sha256="Izfy/OKdyJUcbek5dK3L25qAOLEGstOZ0FkhbOanBGo="; pin-sha256="rUYnkS7gUOewFb2hsdawQs9iW0tgJc3zmChfelISrOc="; pin-sha256="1y+Nilf79617OIvilJjj9Rd7Cs4mPeeYyt1dd6lT2+E="; max-age=2592000; report-uri="https://scotthelme.report-uri.io/r/default/hpkp/enforce"
Strict-Transport-Securitymax-age=31536000; includeSubDomains; preload
X-Frame-OptionsSAMEORIGIN
X-Xss-Protection1; mode=block
X-Content-Type-Optionsnosniff
Missing Headers
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.
Other Services
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Upcoming Headers
Expect-CTExpect-CT allows a site to determine if they are ready for the upcoming Chrome requirements and/or enforce their CT policy.
Additional Information
ServerServer value has been changed. Typically you will see values like "Microsoft-IIS/8.0" or "nginx 1.7.2".
Access-Control-Allow-OriginThis is a very lax CORS policy but the current site is a whitelisted CDN, so this is expected.
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.
Content-Security-Policy-Report-OnlyContent Security Policy Report Only is used to test a Content Security Policy before making it live. The browser will report on actions that would have been taken based on the policy. Analyse this policy in more detail.
Public-Key-PinsHTTP Public Key Pinning protects your site from MiTM attacks using rogue X.509 certificates. By whitelisting only the identities that the browser should trust, your users are protected in the event a certificate authority is compromised. Analyse this policy in more detail.
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.
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.
X-Xss-ProtectionX-XSS-Protection sets the configuration for the cross-site scripting filters built into most browsers. The best configuration is "X-XSS-Protection: 1; mode=block".
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".