Image forensics

["Rob, grandpa of Ryan, Trevor, Devon & Hannah" <rMslade () shaw ca>]

An interesting analysis of a graphic recently used by Victoria's Secret in their 
advertising.  This gives chapter and verse of the techniques used, and results 
obtained, demonstrating the ability to determine if an image has been altered, and 
even which parts of an image have been modified, and how.

http://www.hackerfactor.com/blog/index.php?/archives/322-Body-By-Victoria.html

I find this particularly interesting because of the apparently widely held belief that 
steganography is "undetectable" without comparision to the original image.  Most 
of the "Photoshop disasters" are glaringly obvious to the naked eye.  As this 
demonstrates, analysis and detection of modification is easily accomplished, even 
when the differences are not apparent to the human eye.  (Well, except for the 
straps.  That was pretty stupid ...)

======================  (quote inserted randomly by Pegasus Mailer)
rslade () vcn bc ca     slade () victoria tc ca     rslade () computercrime org
      I live in my own little world, but it's OK, they know me here.
victoria.tc.ca/techrev/rms.htm blog.isc2.org/isc2_blog/slade/index.html
http://blogs.securiteam.com/index.php/archives/author/p1/
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