[iwar] [fc:Experts:.No.Evidence.Bin.Laden.Tampered.with.Web]

From: Fred Cohen (fc@all.net)
Date: 2001-10-18 08:52:23


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Date: Thu, 18 Oct 2001 08:52:23 -0700 (PDT)
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Subject: [iwar] [fc:Experts:.No.Evidence.Bin.Laden.Tampered.with.Web]
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Experts: No Evidence Bin Laden Tampered with Web

By Elinor Mills Abreu, Security News Portal, 10/18/2001
<a href="http://www.securitynewsportal.com/article.php?sid=1973&mode=thread&order=0">http://www.securitynewsportal.com/article.php?sid=1973&mode=thread&order=0>

Amid heightened concern about cyberterrorism, U.S.  scientists said they
have found no signs that Osama bin Laden and his al Qaeda network have
used technology to hide secret messages on the Internet. 

Computer science researchers at the University of Michigan said they had
written a program to detect messages hidden inside of photos on the Web,
but had come up empty-handed.  - "We've come up dry in our search,"
Peter Honeyman, scientific director of the University of Michigan's
Center for Information Technology Integration, told Reuters on Tuesday. 

The researchers scrutinized more than 2 million images from popular Web
sites like eBay auctions since April or June.  They began their search
following a report in USA Today in February that cited unidentified U.S. 
officials and experts saying bin Laden's associates were using a masking
method called "steganography" to hide secret messages on their
activities inside innocent-looking photos on the Web.  Honeyman and
graduate student Niels Provost used software that searches for images
that appear to have been modified and that tries to guess the secret
code needed to view the message -- if there is one.  Unlike encryption
technology, which scrambles messages so they cannot be read and changes
their appearance, steganography hides messages in a way that is not easy
to detect.  The researchers are now searching for steganographic use on
the discussion forum known as Usenet, Provost said. 

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