Decaptcha breaking 75% of ebay audio captchasDecaptcha breaking 75% of ebay audio captchas
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Decaptcha breaking 75% of ebay audio captchas

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Conference3rd USENIX Workshop On Offensive Technologies
AuthorsElie Bursztein , Steven Bethard
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@inproceedings{ BURSZTEIN2009DECAPTCHA,title = {Decaptcha breaking 75% of ebay audio captchas},author = {"Elie, Bursztein" and "Steven, Bethard"},booktitle = {3rd USENIX Workshop On Offensive Technologies},year = {2009},organization = {Usenix}}

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.

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