[funsec] Image forensics

[Gadi Evron]

On 12/28/09 4:21 AM, Rob, grandpa of Ryan, Trevor, Devon & Hannah wrote:
> 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 ...)

I just saw this today and really liked it.

For those who want to spot things with their own eyes, and have a good 
laugh, check out the Photoshop Disasters blog:
http://photoshopdisasters.blogspot.com/



>
> ======================  (quote inserted randomly by Pegasus Mailer)
> rslade at vcn.bc.ca     slade at victoria.tc.ca     rslade at 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/
> http://twitter.com/NoticeBored http://twitter.com/rslade
> _______________________________________________
> Fun and Misc security discussion for OT posts.
> https://linuxbox.org/cgi-bin/mailman/listinfo/funsec
> Note: funsec is a public and open mailing list.
>


-- 
Gadi Evron,
ge at linuxbox.org.

Blog: http://gevron.livejournal.com/