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Re: Just Carnivore (was: Yahoogroups and Carnivore)

  • From: Marshall Eubanks
  • Date: Tue Sep 18 06:23:33 2001

>On Mon, 17 Sep 2001 18:01:53 PDT, Roeland Meyer <[email protected]>  said:
>> However, given mil-grade VPNs these days, there is no way they can read what

>> you sent. They can only tell that you sent something. However, I just
>> discovered the Steganography stuff in my SuSE Linux distribution, hmmmmm.

>> But, they still know where it came from and where it went.
>As Bruce Schneier said, the problem with steganography is that you need
>a good cover story for why you're mailing JPG's of giraffes back and forth...

Dear Vladis;

You need to to separate the forward and the inverse
problems here.

Inverse problem : Can you find a few message bytes in
gigabytes of files going back and forth between everyone
on the web, or even on an ISP, in order to find a target ? Probably not; at
least its tough. 

Forward problem : GIVEN A TARGET, can you look at all of 
their traffic over and over until you find their message
bytes buried in their traffic ? Much higher probability.
And, say, porn to Pakistan will appear in a new light.

I would submit that Carnivore from what I have seen deals
with the easier forward problem.

Marshall Eubanks

[email protected]