Web Wiz CAPTCHA is free security image software written in ASP that displays a security image on your websites forms which only humans can read. This prevents your websites forms from being spammed by robots and hacked using dictionary or brute force hacking.
Web Wiz CAPTCHA has been made to be simple to integrate into your website's existing web forms in minutes.
CAPTCHA (an acronym for "completely automated public Turing test to tell computers and humans apart")