Protecting Websites with Reading-Based CAPTCHAs
نویسندگان
چکیده
Recent document image understanding R&D intended to protect Internet services against abuse by programs is summarized. The accelerating pace of introduction of working CAPTCHAs — completely automatic public Turing tests to tell computers and humans apart — is reported, and the ability of these CAPTCHAs to resist attack is critiqued. Attacks on PARC’s ‘BaffleText’ CAPTCHA by the DIA, CV, and security communities are cordially invited by a PARC website www.parc.com/istl/projects/captcha.
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