[105999] in cryptography@c2.net mail archive
Re: Commercial CAPTCHA-breakers for sale
daemon@ATHENA.MIT.EDU (Ian G)
Mon Oct 22 20:19:17 2007
Date: Mon, 22 Oct 2007 21:55:39 +0200
From: Ian G <iang@systemics.com>
To: Peter Gutmann <pgut001@cs.auckland.ac.nz>
Cc: cryptography@metzdowd.com
In-Reply-To: <E1IjvAv-0004pU-PH@wintermute02.cs.auckland.ac.nz>
Peter Gutmann wrote:
> http://www.lafdc.com/captcha/ is a site that sells commercial CAPTCHA-breaking
> software. It also shows success rates for different types of CAPTCHAs. While
> the ratings are merely representative of this particular site's software and
> not a universal measure, it's interesting to note that there's already a
> commercial market for anti-CAPTCHA tools.
The other approach that I've heard of against such
turing/human tests is that attackers have experimented with
mechanical turk style systems.
iang
http://www.mturk.com/mturk/welcome
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