Re: [tor-talk] What if I connect to all nsa Tor nodes?

[Nathan Suchy <theusernameiwantistaken@xxxxxxxxx>]

Is it possible for me to force my client to connect to my tor exit as the
middle node?


On Sun, Sep 8, 2013 at 1:11 PM, Paul Syverson <syverson@xxxxxxxxxxxxxxxx>wrote:

> On Sun, Sep 08, 2013 at 11:47:06AM -0400, Nathan Suchy wrote:
> > Would my traffic still be secure?
> >
>
> To do what, and secure against whom and to what degree?
>
> It is reasonable to assume that if NSA is running Tor nodes, then they
> are probably using good operational security. So against someone
> breaking into those nodes and then attacking you, you are probably
> more secure than using random nodes. (But see below.)
>
> If you mean secure against the NSA node operators, then no. Any
> adversary that owns all the nodes in your route should be able to
> learn pretty much everything about your traffic patterns, who you're
> talking to and when. This is true for the NSA or anybody else.
>
> If you mean intentionally selecting some subset of nodes because you
> trust them more or because you are trying to avoid them as adversary
> nodes, there is a tradeoff between the potential better security that
> might provide and what your choice might reveal about you. cf.
> "Trust-based Anonymous Communication: Adversary Models and Routing
> Algorithms". There's currently research advances but no simple advice
> on that score.
>
> This all assumes adversaries just live at the nodes rather than also
> at the ISPs, the ASes, the IXPs, etc. It is hard to say anything more
> about such an adversary without more details. You might want to see
> "Users Get Routed: Traffic Correlation on Tor By Realistic
> Adversaries" and some of the earlier work on this issue cited therein.
>
> HTH,
> Paul
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