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Outsmarted: Captcha Security Not Much of a Gotcha

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Elie Bursztein, Stanford

Elie Bursztein says he was able to decode 66% of the anti-bot tests used by Visa's payment site.

Credit: Declan McCullagh /CNET

A team of Stanford University researchers has bad news to report about Captchas, those often unreadable, always annoying distorted letters that you're required to type in at many a Web site to prove that you're really a human.

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