> I remember being told that Al-Qaeda used this mechanism to exchange messages I don't think that was ever confirmed. Niels Provos and Peter Honeyman went loo

> I remember being told that Al-Qaeda used this mechanism to exchange messages I don't think that was ever confirmed. Niels Provos and Peter Honeyman went looking for stego content "in the wild", examining over 2 million images, which was a lot at the time. Their search came up empty. http://www.citi.umich.edu/u/provos/papers/detecting.pdf http://www.citi.umich.edu/u/provos/papers/detecting.pdf Edit: Apparently they did find one image, created as a demonstration for the ABC News story. http://www.citi.umich.edu/u/provos/stego/abc.html http://www.citi.umich.edu/u/provos/stego/abc.html