Steganography Detection on the Internet

Show that steganalytic methods are feasible in practice.
Assess claims that steganographic content is regularly posted to the Internet.
J. Kelley, Terror groups hide behind Web encryption, USA Today, February 2001.
Declan McCullagh, Secret Messages Come in .Wavs, Wired News, February 2001.
J. Kelley, Militants wire Web with links to jihad, USA Today, July 2002.

Steganography detection framework to assess claims:
Obtain millions of images from eBay and USENET.
Use steganalysis to identify a subset of images likely to contain steganographic content.
Verify hidden content via distributed dictionary attack.

Demonstrates that steganalysis of millions of images is feasible.
[Provos et al, 2002]