Decaptcha: Breaking 75% of eBay Audio CAPTCHAs.
Posted on : 11-08-2009 | By : Elie Bursztein | In : Article, Publications
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CAPTCHA tests aim at preventing attackers from performing automatic registration. In this paper we show that our prototype Decaptcha is able to successfully break 75% of eBay audio captchas. We compare its performance with the state of the art, readily
available speech recognition system Sphinx and discuss the implications for eBay security.
Presented at Woot’09, montréal Canada



