Merit Network
Can't find what you're looking for? Search the Mail Archives.
  About Merit   Services   Network   Resources & Support   Network Research   News   Events   Home

Discussion Communities: Merit Network Email List Archives

North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: How do you stop outgoing spam?

  • From: Richard A Steenbergen
  • Date: Tue Sep 10 16:13:43 2002

On Tue, Sep 10, 2002 at 12:45:01PM -0700, Al Rowland wrote:
> 
> Steganography looked great in that hollywood movie Along Came a Spider
> with Morgan Freeman (or at least the 'screen friendly' version they
> portrayed) but a recent study of millions of graphics across USENET
> found zero steganographic images. Great theory, no examples found in the
> wild, other than in Hollywood scripts and some folk trading porn of the
> type not usually posted to the public Internet.

Well, I wouldn't say that.

There is an EXTENSIVE trade of some unknown data going to and from Asia
(primarily Japan and China) through various forms of steganography in jpg
png and gif images on free web hosting services. I can personally account
for over 5Gbps (every day) of this traffic just from people I know, which
I would hardly consider to be "everyone".

I've managed to reconstruct the data from pieces of scripts they have
accidentally left behind, and come up with encrypted .zip files. Left a
zip cracker running on a 1GHz machine for a couple months and came up with
no results.

I'm not gonna take any guesses as to the content, but I can tell you that
they are very diversified, very persistant (you filter one route or
transit path and they'll have moved to another within hours), and very
innovative in hiding the data so that you can't detect what they're doing
short of looking at every picture.

-- 
Richard A Steenbergen <ras@e-gerbil.net>       http://www.e-gerbil.net/ras
PGP Key ID: 0x138EA177  (67 29 D7 BC E8 18 3E DA  B2 46 B3 D8 14 36 FE B6)




Discussion Communities


About Merit | Services | Network | Resources & Support | Network Research
News | Events | Contact | Site Map | Merit Network Home


Merit Network, Inc.