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Date: Fri, 2 Aug 2013 07:41:46 -0700
From: Reed Black <>
Cc: "" <>
Subject: Re: XKeyscore sees 'nearly EVERYTHING you doonline

On Thu, Aug 1, 2013 at 11:05 PM, Christian Rost
<> wrote:
>>What I have HUGE doubts
>>about is how they transport all of that data back to their data centres,
>>unless they have a massive quantity of dark (private) fibre that no one
>>knows about.
> They probably would have set up a decentralized infrastructure, with
> multiple (smaller) daca centres all over the world. This way they can
> store and process the collected data on site and don't need to
> transport everything home.

>From the slides, which say it's federated search and that it scales
linearly, this is most likely.

Of note, it also means anyone with visibility of one node's activity
might know what's being searched.

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