Wednesday, November 08, 2006

CAPTCHAs at Internet Storm Center

ISC ran a story titled 'Form Spam: Increasing the Attacker's work function'

To deal with spam they implemented a CAPTCHA. This was some home made CAPTCHA solution. They report that this led to a decrease in the number of submissions:
Our somewhat ugly home made captcha solution caused submissions to drop by about 30%, which wasn't acceptable.


Kinda interesting to note that the highly-technical geeky chaps did not want to solve a CAPTCHA !

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