[Full-Disclosure] Visual Captchas AKA Word Verification Systems
keetch_tw at hotmail.com
Mon Jun 14 10:45:22 BST 2004
I had actually heard that before. But my aim is not to bypass the image, but
to solve what is essentially a Turing Test in computer vision.
Cheers, Tom Keetch
>From: Valdis.Kletnieks at vt.edu
>To: Tom K <keetch_tw at hotmail.com>
>CC: full-disclosure at lists.netsys.com
>Subject: Re: [Full-Disclosure] Visual Captchas AKA Word Verification
>Systems Date: Sun, 13 Jun 2004 20:44:44 -0400
>On Sun, 13 Jun 2004 18:27:22 -0000, Tom K <keetch_tw at hotmail.com> said:
> > Secondly, would it be possible if anyone could kindly supply me with a
> > links to practical information on Optical Character Recognition, since I
> > still trying to improve my character recognition rate which is currently
> > 20-50% depending on the obfuscations applied. i.e. Grids, lines and
> > are easily removed, skewing is less so.
>If you want close to 100%, just take the image you get passed, and drop it
>as the "secret leet key" to get access to a free porn site, and let the
>decrypt it for you. This is currently reported as a technique in active
>by spammers to work around those captchas.....
><< attach3 >>
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