Hi Brian,

Thanks for forwarding, I didn't understand your point originally. I (or 
hopefully someone who's already involved in webappsec) will follow up.

Thanks,
Monica

----- Original Message -----
> On Mon, Nov 10, 2014 at 7:15 PM, Monica Chew <[email protected]> wrote:
> > Yep, it's definitely not a perfect solution. A site operator who's willing
> > to concede subdomain control through DNS to a third party provider will
> > definitely be able to work around origin checks. We could try to combat
> > this by, say, resolving domain names to IPs and then blocking those -- but
> > that has its own issues.
> >
> > Many security and privacy problems exhibit arms race qualities. For
> > instance, email spam is at something like 80-90% of all mail. I doubt
> > anyone would make the argument that we should therefore give up on spam
> > fighting because the problem will never be completely solved.
> 
> Hi,
> 
> I agree with you Monica. I forwarded this email to dev.privacy so that
> people here can be aware of this work in webappsec. In particular, it
> might be worth trying to find ways to improve the planned suborigin
> mechanism so that there is more information in the embedding page that
> helps tracking protection and similar mechanisms--i.e. that allows the
> mechanism to have the positive security benefits that are intended
> without it contributing negatively and unintentionally to that arms
> race. I don't have time to deal with that issue, but I do hope that
> somebody takes it on.
> 
> Cheers,
> Brian
> 
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