Researchers Combat Terrorists by Rooting Out Hidden Messages

[Steve Schear]

At 02:07 PM 2/1/2005, Tyler Durden wrote:

>Counter-stego detection.
>
>Seems to me a main tool will be a 2-D Fourier analysis...Stego will 
>certainly have a certain "thumbprint", depending on the algorithm. Are 
>there certain images that can hide stego more effectively? IN other words, 
>these images should have a lot of spectral energy in the same frequency 
>bands where Stego would normally show.

Images that ideal for hiding secret messages using stego are those that by 
default contain stego with no particular hidden content.  A sort of Crowds 
approach to stego.

Steve