资 源 简 介
A CAPTCHA is a type of challenge-response test used in computing as an attempt to ensure that the response is generated by a person
Automated requests can easily use a brute force attack on a company"s WI website & crack into their systems, or at least in most cases succeed to permanently lock out AD account(s) (in MS Win environments with lockout policy enabled) .
More info:
http://huseynov.com/index.php?post=captcha-in-citrix-xenapp-web-interface
