Repetition breaks Google Audio CAPTCHA

    Date04 Aug 2010
    CategoryHacks/Cracks
    2682
    Posted ByAlex
    Google has fixed a flaw in its Audio CAPTCHA software that could have given scammers a way to automatically set up phoney accounts with the company's services. The flaw was described in a post to the Full Disclosure mailing list Monday. According to the post, anyone could pass a Google Audio CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) test by typing in any 10 words as the response.

    CAPTCHA is testing software used by many websites to cut down on online fraud. Sites often use CAPTCHA systems to make sure that new accounts are created by human beings, instead of automated scripts. Typically a CAPTCHA test presents a hard-to-read image of a word, which the user must then type in to prove he is not a machine. The audio version gives visually impaired users a way to use CAPTCHA, by playing a recorded sound of the test word.

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