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Date: Thu, 16 Oct 2014 18:45:18 -0600
From: Kurt Seifried <>
Subject: Re: attacking hsts through ntp

On 16/10/14 06:32 PM, Michael Samuel wrote:
> On 16 October 2014 23:03, Hanno Böck <> wrote:
>> Same should work for HPKP. The idea of setting some security feature
>> through a header needs a revisit.
>> The solution would be to have a more reliable PC time. How do we do
>> that?
> A Date: header?

You can't trust remote servers you're getting the content from... what
if I send wonky times to try and screw with your browser? Or header
injection attacks? No thanks.

Kurt Seifried -- Red Hat -- Product Security -- Cloud
PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993

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