Abstract
Recognized as Web Hacking Top 10 Techniques in the year 2012From: http://gursevkalra.blogspot.com/2012/03/captcha-re-riding-attack.html
CAPTCHA Re-Riding Attack bypasses the CAPTCHA protection built into the web applications. The attack exploits the fact that the code that verifies CAPTCHA solutions sent by the user during form submissions does not clear the CAPTCHA solution from the HTTP Session.