FITUG e.V. Förderverein Informationstechnik und Gesellschaft

FC: Hidden image extracted from ABC News report: First s

------- Forwarded message follows ------- Date sent: Wed, 10 Oct 2001 13:34:51 -0400 From: Declan McCullagh <declan@well.com> To: politech@politechbot.com Copies to: provos@citi.umich.edu, honey@citi.umich.edu Subject: FC: Hidden image extracted from ABC News report: First stego trophy? Send reply to: declan@well.com

Peter Honeyman and Niels Provos from UMich's Center for Information Technology Integration have successfully extracted a hidden image from a sample JPEG image. That sample JPEG was featured in a recent ABC News report about steganography: http://www.politechbot.com/p-02623.html

No, the image wasn't created by bin Laden & com, but it's an interesting demonstration nevertheless. I dislike sending out attachments, so I've placed the extracted image here: http://www.politechbot.com/docs/stego-trophy.jpg

Below message forwarded with permission.

-Declan

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Date: Tue, 09 Oct 2001 20:08:25 -0400 From: Niels Provos <provos@citi.umich.edu> Subject: first steganography trophy

Ducan Campbell, author of an interesting article for telepolis, informed Peter and me about the ABC coverage concerning steganography. Here is part of his message:

During the broadcast (transcribed here at the end), Mr Hosner displayed a jpeg image which can be found at http://www.wetstonetech.com/sovereigntime.jpg. It is also attached to this mail. He asserts that it contains a steg image of a B52.

Peter suggested to use my stego tools on it. No problem:

$ stegdetect sovereigntime.jpg sovereigntime.jpg : jsteg(***) $ stegbreak -tj -f wordlist sovereigntime.jpg Loaded 1 files... sovereigntime.jpg : jsteg(abc) Processed 1 files, found 1 embeddings. Time: 1 seconds: Cracks: 1156, 1156.0 c/s

The secret key is "abc." And the hidden message is an image of an aerial view of a military airport. I attached it.

Actually, this is the first real hidden message that we have found.

Niels.

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