funsec mailing list archives
Re: Image forensics
From: Martin Tomasek <tomasek () ufe cz>
Date: Mon, 28 Dec 2009 08:53:40 +0100
AFAIK best algorithms for image forensics has Mahdian Babak's company Imagemetry. http://www.utia.cas.cz/node/467/Mahdian/Babak http://imagemetry.com/ Speaking of noise inconsistencies, http://library.utia.cas.cz/separaty/2009/ZOI/saic-using%20noise%20inconsistencies%20for%20blind%20image%20forensics.pdf Rob, grandpa of Ryan, Trevor, Devon & Hannah napsal(a):
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/ 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.
_______________________________________________ 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.
Current thread:
- Image forensics Rob, grandpa of Ryan, Trevor, Devon & Hannah (Dec 27)
- Re: Image forensics Dan Kaminsky (Dec 27)
- Re: Image forensics Martin Tomasek (Dec 28)
- Re: Image forensics Imri Goldberg (Dec 28)
- Re: Image forensics Martin Tomasek (Dec 28)
- Re: Image forensics Martin Tomasek (Dec 28)
- Re: Image forensics Dan Kaminsky (Dec 27)
- Re: Image forensics Martin Tomasek (Dec 28)
- Re: Image forensics Gadi Evron (Dec 28)
- <Possible follow-ups>
- Re: Image forensics Dr. Neal Krawetz (Dec 28)
- Re: Image forensics Dan Kaminsky (Dec 28)
- Re: Image forensics Dr. Neal Krawetz (Dec 28)