Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-06 Thread Maxim Kammerer
On Sun, Oct 6, 2013 at 10:19 PM, Kyle Maxwell  wrote:
> NSA culture discourages employees from being open about where they
> work. Most will say "Department of Defense" or, in some cases, "Ft
> Meade". So the fact that you've not met people who openly disclose
> their affiliation with NSA doesn't *necessarily* mean that you've not
> met any NSA engineers / CS types.

I wrote “someone collaborating with GCHQ”, not “someone working at
GCHQ”. For instance, I have seen an NSA internship listed on an
acquaintance's grad student's CV, but his work didn't strike me as
particularly impressive. Which is my point.

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Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-06 Thread Ximin Luo
On 04/10/13 16:42, Griffin Boyce wrote:
> There are some questions in my mind as to the legitimacy of this
> document -- particularly given that a slide is marked 2007, but
> references 2012. (In particular, neither Torservers nor TorButton
> existed in 2007).

I take it you mean this from the first slide:

Derived From: [snip]
Dated: 20070108

"Dated" could refer to the original derived-from document. But that might be 
stretching the interpretation a bit..

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Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-06 Thread James S. Tyre
Kyle Maxwell wrote

> NSA culture discourages employees from being open about where they work. Most 
> will say
> "Department of Defense" or, in some cases, "Ft Meade". So the fact that 
> you've not met
> people who openly disclose their affiliation with NSA doesn't *necessarily* 
> mean that
> you've not met any NSA engineers / CS types.

Often true, but not always.  I know one such person who, while with NSA, also 
was the
elected Mayor of College Park, Maryland.  His constituents knew where he 
worked, it wasn't
a secret.

Unexpected to me at the time, but true.

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Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-06 Thread Kyle Maxwell
On Fri, Oct 4, 2013 at 11:51 AM, Maxim Kammerer  wrote:
> After going over the presentation, it seems as if GCHQ did all the
> work. Does NSA actually have good computer scientists working for it
> (not including mathematicians / cryptographers)? E.g., I have been to
> a workshop in London a few months ago (in an unrelated field), and
> instantly met someone collaborating with GCHQ. Never met someone
> working with NSA, however. NSA's CAE CO program, which could perhaps
> be considered their vanguard of academic CS cooperation, is just four
> little-known universities / colleges.

NSA culture discourages employees from being open about where they
work. Most will say "Department of Defense" or, in some cases, "Ft
Meade". So the fact that you've not met people who openly disclose
their affiliation with NSA doesn't *necessarily* mean that you've not
met any NSA engineers / CS types.

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Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-04 Thread Maxim Kammerer
> I wonder what the current state of affairs is, though. The slides
> suggest that the global passive interception infrastructure is not
> suitable for correlation-based deanonymization, so NSA/GCHQ need
> “access to nodes”. But that was 6 years ago.

See also my analysis from last year [1]. Sniffing ~25 selected C-class
networks with Tor relays gives your ~25% end-to-end correlation
capability. Surely NSA would be able to install 25 designated probes
in 6 years. My guess is that they have the capability, but reserve it
for high-profile national security targets (see last slide).

[1] https://lists.torproject.org/pipermail/tor-talk/2012-August/025254.html

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Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-04 Thread Michael Rogers
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Hash: SHA1

On 04/10/13 16:42, Griffin Boyce wrote:
> There are some questions in my mind as to the legitimacy of this 
> document -- particularly given that a slide is marked 2007, but 
> references 2012. (In particular, neither Torservers nor TorButton 
> existed in 2007).

The first slide is dated "Jun 2012", with the following in a red box:
Derived From: NSA/CSSM 1-52
Dated: 20070108
Declassify On: 20370101

The first Egotistical Giraffe slide has a similar red box:
Derived From: NSA/CSSM 1-52
Dated: 20070108
Declassify On: 20371101

The Egotistical Giraffe slides use the date 24 October 2012 in an
example, and state that the Tor Browser Bundle is based on Firefox 10
ESR, which was true between 12 June 2012 and 22 February 2013.

https://blog.torproject.org/category/tags/firefox

My guess is that the slides come from 2012 and the Dated field in the
red boxes refers to something else - perhaps the start of the
programme to which the slides belong?

Cheers,
Michael
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Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-04 Thread Maxim Kammerer
After going over the presentation, it seems as if GCHQ did all the
work. Does NSA actually have good computer scientists working for it
(not including mathematicians / cryptographers)? E.g., I have been to
a workshop in London a few months ago (in an unrelated field), and
instantly met someone collaborating with GCHQ. Never met someone
working with NSA, however. NSA's CAE CO program, which could perhaps
be considered their vanguard of academic CS cooperation, is just four
little-known universities / colleges.

I wonder what the current state of affairs is, though. The slides
suggest that the global passive interception infrastructure is not
suitable for correlation-based deanonymization, so NSA/GCHQ need
“access to nodes”. But that was 6 years ago.

On Fri, Oct 4, 2013 at 7:23 PM, Maxim Kammerer  wrote:
> On Fri, Oct 4, 2013 at 7:20 PM, Griffin Boyce  wrote:
>> I didn't mention the browser bundle ;P
>
> It is referenced in slide 7, together with Torbutton.
>
> --
> Maxim Kammerer
> Liberté Linux: http://dee.su/liberte



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Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-04 Thread Maxim Kammerer
On Fri, Oct 4, 2013 at 7:20 PM, Griffin Boyce  wrote:
> I didn't mention the browser bundle ;P

It is referenced in slide 7, together with Torbutton.

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Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-04 Thread Griffin Boyce
On 10/04/2013 06:12 PM, Maxim Kammerer wrote:
> Both Tor Button and Tor Browser Bundle existed in 2007. 
I didn't mention the browser bundle ;P

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Re: [liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-04 Thread Maxim Kammerer
On Fri, Oct 4, 2013 at 6:42 PM, Griffin Boyce  wrote:
> There are some questions in my mind as to the legitimacy of this
> document -- particularly given that a slide is marked 2007, but
> references 2012. (In particular, neither Torservers nor TorButton
> existed in 2007).

Both Tor Button and Tor Browser Bundle existed in 2007.
https://gitweb.torproject.org/torbrowser.git/commit/4633a99
https://gitweb.torproject.org/torbutton.git/commit/74cd0da

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[liberationtech] NSA-GCHQ meeting on Tor (with slides!)

2013-10-04 Thread Griffin Boyce

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  There's been a really interesting document to come out of the Guardian
today:
http://www.theguardian.com/world/interactive/2013/oct/04/tor-stinks-nsa-presentation-document

Interestingly:
  - NSA/GCHQ was fingerprinting using Flash
  - They were wondering whether to flood the network with slow
connections in order to discourage users
  - Cookie leakage
  - Timing attacks
  - Supposed bug in TorButton mid last year

There are some questions in my mind as to the legitimacy of this
document -- particularly given that a slide is marked 2007, but
references 2012. (In particular, neither Torservers nor TorButton
existed in 2007).

Thoughts?

~Griffin

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