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Analyzing CAPTCHAs

Posted by CmdrTaco on from the i-fail-more-than-i-win dept.

Bruce Schneier's blog pointed me to a research paper on "Attacks and Design of Image Recognition CAPTCHAs" (PDF). The abstract says, "We systematically study the design of image recognition CAPTCHAs (IRCs) in this paper. We first review and examine all IRCs schemes known to us and evaluate each scheme against the practical requirements in CAPTCHA applications, particularly in large-scale real-life applications such as Gmail and Hotmail."

1 of 105 comments (clear)

  1. PDF warning? by clone53421 · · Score: 0, Troll

    2nd link is a PDF. Thanks for the warning...

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    Alexander Peter Kristopeit bought his basement from his mommy for one dollar.