From: wcs@anchor.ho.att.com (bill.stewart@pleasantonca.ncr.com +1-510-484-6204)
Date: Thu, 18 Aug 94 17:17:46 PDT
To: cypherpunks@toad.com
Subject: Re: RemailerNet
Message-ID: <9408182345.AA22955@anchor.ho.att.com>
MIME-Version: 1.0
Content-Type: text/plain


> lcottrell@popmail.ucsd.edu (Lance Cottrell) writes:
> >Say I post a message through remailers to Cypherpunks giving one of these
> >reply blocks. The TLA need only send a flood of known size messages to this
> >address, and look to see where the pop out of the net of remailers. Even if
> >all messages were quantized and only reconstructed by the final recipient, the
> >TLA could send timed bursts of messages which (even with reordering) would 
> >allow a statistical determination of the recipient.

In particular, this is rather rough on the "reorder and remail after N packets"
approach to remailers - if N is 10, and the Bad Guys can inject messages into
the system, they can tap and duplicate messages going into the remailers....

		Bill