A CAPTCHA (an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart) is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot. You may have seen one before. It is usually a series of mixed up characters that you have to enter to proceed on some websites.

Ever wonder why the email address listed there receives a lot of SPAM? Spammers or bots can glean that information from the form.
A best practice to guard against a spammer or bot harvesting your email address is that the recipient email address within the form be encoded.

CAPTCHA links (information and where to get):


  • . http://recaptcha.net/
  • . http://www.captcha.net/
  • . http://en.wikipedia.org/wiki/Captcha
  • . http://www.u229.no/stuff/Captcha/
  • . http://sourceforge.net/projects/asp-captcha
  • . http://www.hotscripts.com/ASP/Scripts_and_Components/Security_Systems/

Article ID: 137, Created On: 12/4/2013, Modified: 1/10/2014

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