[ale] encryption/obfuscation (Was: No, wait- Leonard ...)

[Jeff Hubbs]

Brian -

No, I'd call that a Trojan.

- Jeff

On Tue, 2002-07-09 at 23:22, Brian wrote:
> It might also be worth noting that there was a proof
> of concept virus (W32:Perrun virus) that was believed
> to have originated from the Philippines that hides in
> a jpeg file. Is this considered steganography?
> 
> --- Kevin Krumwiede <krum at smyrnacable.net> wrote:
> > On Tue, 2002-07-09 at 15:09, Sean Kilpatrick wrote:
> >  
> 
> > 
> > That's right, though I don't know if it's been done
> > with JPEG files.  I
> > know it can be done with lossless image formats and
> > even sound or video
> > files.  And you can encode not just text, but any
> > type of data.
> > 
> > The concept is simple.  The least significant bit of
> > each pixel is
> > replaced with a bit from the data to be encoded.  If
> > the LSBs were
> > fairly random to begin with, as in a photograph, the
> > image will not be
> > visibly altered.  If the data is plaintext or some
> > well-known file
> > format, in theory it would be easily identified. 
> > But if the data were
> > encrypted it might be impossible to detect.
> > 
> > Krum
> > 
> > 
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> > 
> 
> 
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