Security Report Summary
B
Site: https://letterb.in/
IP Address: 163.172.147.55
Report Time: 24 May 2017 13:25:04 UTC
Report Short URL: https://schd.io/1n0
Headers:
  • Strict-Transport-Security
  • Content-Security-Policy
  • X-Frame-Options
  • X-XSS-Protection
  • X-Content-Type-Options
  • Public-Key-Pins
  • Referrer-Policy
Warning: Grade capped at A, please see warnings below.
Raw Headers
HTTP/1.1200 OK
serverCowboy
dateWed, 24 May 2017 13:25:02 GMT
content-length1592
content-typetext/html; charset=utf-8
cache-controlmax-age=0, private, must-revalidate
strict-transport-securitymax-age=31536000
x-request-id56c5ruigc0da464vilr5p3flatcea4k9
content-security-policydefault-src 'self' wss:; img-src 'self' http: https:; style-src 'self' 'unsafe-inline' fonts.googleapis.com assets-cdn.github.com; script-src https: 'unsafe-inline' 'unsafe-eval' assets-cdn.github.com; font-src fonts.gstatic.com
x-frame-optionsSAMEORIGIN
x-xss-protection1; mode=block
x-content-type-optionsnosniff
Missing Headers
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.
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.
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.
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".
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.
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.
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".