Content-Security-Policy

[shesek]

Should use the following header:

Content-Security-Policy:
  default-src https://www.bitrated.com/;
  frame-src 'none';
  object-src 'none';
  connect-src https://www.bitrated.com/ https://blockchain.info/ https://coinb.in/;
  report-uri /csp-violation/

This is pretty much as strict as it can get. This instructs the browser to:

• Block resources that don't originate from bitrated.com over SSL
• Block XmlHttpRequests except for blockchain.info and coinb.in APIs
• Block inline scripts
• Block eval (not that it does much against XSS, but why not)
• Block iframes and objects completely (those aren't currently used)
• Send violation reports to an API endpoint.

Todo:

• Move inline script that tests browser support to a separate file
• Check for other inline script usages (there shouldn't be any)
• Add header on dev environment
• Ensure nothing breaks (mostly by disallowing eval - not used in Bitrated, but might be used in one of the libraries)
• API for violation reports, forward to email
• Update security page
• Push live