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reCAPTCHA weakened - Last Modified 2010-11-30 16:51 UTC - Created 2010-11-30 16:51 UTC

So for my Computer Vision graduate class at the University of Colorado I choose to do an analysis of reCAPTCHA and algorithms used to defeat it.

With a success rate of up to 23% automated software using vision algorithms can successfully get around the CAPTCHA. This still allows a large amount of SPAM to get through. There are other CAPTCHA systems that fair a little better, but it is only a matter of time before those are broken too. We'll have to wait and see what comes along next to thwart spammers.

You can access my paper here and all of my research data and materials here.