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SecurityImages (CAPTCHAs) for Joomla

Description:

SecurityImages helps reduce website spam and improve Joomla security by allowing you to implement CAPTCHAs. Ever been to a site where you had to register and the registration form required that you type in the same phrase that is found in a hard-to-read image? Those images are known as CAPTCHAs*.

To protect you from spam attempts, it offers five famillies of highly configurable CAPTCHAs. This component is a framework and is currently used by many others components: Akobook; Akocomment; Joomla contact, login and registration; Simpleboard forum; Vvirtuemart.

*CAPTCHA definition: A captcha (an acronym for "completely automated public Turing test to tell computers and humans apart") is a type of challenge- response test used in computing to determine whether or not the user is human. The term was coined in 2000 by Luis von Ahn, Manuel Blum, and Nicholas J. Hopper of Carnegie Mellon University, and John Langford of IBM. A common type of captcha requires that the user type the letters of a distorted and/or obscured sequence of letters or digits that appears on the screen.