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Message from discussion Content Security Policy Spec questions and feedback
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EricLaw  
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 More options Jul 9 2009, 6:05 pm
Newsgroups: mozilla.dev.security
From: EricLaw <bay...@gmail.com>
Date: Thu, 9 Jul 2009 15:05:24 -0700 (PDT)
Local: Thurs, Jul 9 2009 6:05 pm
Subject: Re: Content Security Policy Spec questions and feedback
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Lots of great thoughts in this thread!

I wanted to elaborate a bit here:

> > It seems natural that a subdownload should be able to say e.g. Content-
> > Security-Policy: callers <originlist>
> That's not too far off from what frame-ancestors does (which was also a
> scope-creep). Could they be combined in some way?

> I'd like something like that, but won't concerned sites want to enforce
> it server-side? A reliable Referer, or the Origin/Sec-From header would
> seem more useful there.

Some might, but that basically requires the server to send Vary:
Origin or Vary: Sec-From for all resources returned.  This seems like
it could potentially impair performance for otherwise cacheable
resources.

 
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