| Anonymous Remailer (austria) 2007-09-16, 7:11 pm |
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jellybean stonerfish wrote:
> On Sun, 16 Sep 2007 01:44:32 +0200, Anonymous wrote:
>
>
> Can't the data be stored in the image itself. Like maybe add some
> dots at some specified co-ordinates, picked by some non-random
> algorithm. I have never tried, but if I were to hide data in a pic,
> it would be in the image itself, not in some headers or tags, or even
> hidden in the file. Then one would need to know where to look before
> there would be any evidence of hidden data. Of course the image
> would need to be something that could handle the hidden data, like a
> picture of clouds or grass or gravel or something like that. Anyway,
> that his how I thought it would be done. If this idea is knew, then
> I give it away for free.
There's two basic types of stego, those that hide data in unused space
like the LSB, and those that use programmatic methods to hide data in
"noise" like what you're describing. The first type is really easy to
spot, almost a joke. The second is a little harder, but a statistical
analysis will root it out every time.
The cops have gotten real good at for example it because a) it is
possible to do unlike breaking encryption, and b) they're "fighting a
war on kiddie porn". ;)
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