0 Replies Latest reply on Oct 10, 2008 3:46 PM by paullotion

    Cracking CAPTCHA: Another Russian Business

      We’ve already written about CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart), the mechanism used to protect web sites, forums, and mailing systems against the automatic creation of accounts and contents. As my colleague Tad Heppner wrote in his November 2007 post, most common CAPTCHA systems work by generating distorted characters, text, or pictures that can be easily recognized by the human brain but present significant difficulty for computer-based optical character recognition or other image-recognition systems.

      It should come as no surprise, however, that spammers continue to try to crack CAPTCHA. We’ve now seen a new version of a professional spammer tool on the web. XRumer 5 sells for $520 and promises advanced CAPTCHA decoding methods.
      http://www.avertlabs.com/research/blog/index.php/2008/10/10/cracking-captcha-as- a-business/