Main Area and Open Discussion > General Software Discussion
How to [partially] blur screenshots?
f0dder:
Wraith: you'll need knowledge of the blurring algorithm, font and size, and then you have to write some custom bruteforcing code... it's not guaranteed to work, and most people probably won't ever face such an attack. Still, it worth keeping in mind :)
barney:
Just curious ... would that fall into the same realm as steganography? Or is steganography a different beast altogether?
f0dder:
Steganography means hiding data in other data (usually pictures or audio), this doesn't qualify :)
barney:
'K. Since I usually see steg* referenced for graphics, just wondered if similar algorithms applied :-[. Obviously not ;D.
rjbull:
if you are blurring text (like a serial number for example) then your attacker is not interested in a perfect reconstruction of the original image, they are really just interested in finding the most likely original text string that could be in the source image before the blurring, which is possible.
-mouser (July 27, 2010, 12:23 PM)
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Would it help to have an option to first over-write the area to be blurred with a suitably rude message, then blur it? Just to add a bit more obfuscation?
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