SecurityTube

Description: This presentation will detail two methods of breaking captcha. One uses RainbowCrack to break a visual captcha. The other uses fuzzy logic to break an audio captcha. Both methods are 100% effective. These are real attacks that affect real world software: CVE-2008-2020 CVE-2008-2019. Exploit code is available to the public

For more information visit: http://bit.ly/defcon16_information

Tags: captcha , methods , break ,

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Comments:

• David on Thu 03 Mar 2011
  
  solid info, although slightly hard to watch due to the lack of presentation skills...
• H4TT1fn4TT on Sat 05 Mar 2011
  
  To much irrelevant information.
  
  Can not really see the use of this information as well. What are you going to do, Bruteforce? Most CMS-es if not all also use a 15 minute time-out after 5 failed logins.
  
  I can not think of any scenario this would be useful for.

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