[118752] in Cypherpunks
Re: Unplugged! The biggest hack in history
daemon@ATHENA.MIT.EDU (Adam Shostack)
Thu Oct 7 10:09:10 1999
Date: Thu, 7 Oct 1999 09:50:37 -0400
From: Adam Shostack <adam@homeport.org>
To: Lucky Green <shamrock@cypherpunks.to>
Cc: Cypherpunks Mailing List <cypherpunks@cyberpass.net>
Message-ID: <19991007095037.A9043@weathership.homeport.org>
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In-Reply-To: <NDBBIFGOKODBCKDGJDKLAECACJAA.shamrock@cypherpunks.to>
Reply-To: Adam Shostack <adam@homeport.org>
Money laundering?
On Thu, Oct 07, 1999 at 12:07:54AM -0700, Lucky Green wrote:
| I am just catching the tail end of this thread, but why in the world would
| somebody in LE pay for a custom-built device to perform blind demod when you
| can buy off-the-shelf devices that perform blind demod on V.90 connections
| from Applied Signal?
|
| --Lucky Green <shamrock@cypherpunks.to>
|
| > -----Original Message-----
| > From: owner-cypherpunks@Algebra.COM
| > [mailto:owner-cypherpunks@Algebra.COM]On Behalf Of John A. Limpert
| > Sent: Wednesday, October 06, 1999 23:01
| > To: Sean Roach; cypherpunks@Algebra.COM
| > Subject: Re: Unplugged! The biggest hack in history
| >
| >
| >
| > >From: Sean Roach <roach_s@mail.intplsrv.net>
| > >
| > > Flaws as I see them.
| > >
| > > I'm assuming, probably erroniously, that a given packet can be
| > > checked for errors, up to a certain time, where that time is before
| > > the packet has been completely transmitted.
| >
| > You could compute the probability of having received an error-free packet
| > when all but the last N (N < 16) bits have been transmitted. This would
| > involve checking the CRC result for the 2**N possible values of the
| > remaining N bits. There are probably better ways of doing it than brute
| > force.
| >
| > > Toying with the connection may tip off the bugged that someone is
| > > evesdropping.
| >
| > A simpler method would be to install a bidirectional delay line.
| > This would
| > allow you to preview the data at the input to the delay line, evaluate it
| > and insert hits at the output of the delay line. A TDR (time domain
| > reflectometer) would see a unusually long line between the subscriber and
| > the central office.
--
"It is seldom that liberty of any kind is lost all at once."
-Hume
