1. Use Image security with joomla core contacts component in 3 steps
(my publications/tutorials and demos)

...disadvantage is the lack of a good captcha spam protection. Today, using the captch images engine com_securityimages by cedric_walter its getting even easier to apply it to any joomla component ...

2. Acceptable Use Policy
(my publications/General)

...ablishment and enforcement of El-Tech's AUP: Ensure reliable service to our customers: Ensure security and privacy of our systems and network, as well as the networks and systems of ot...

3. Terms of Service
(my publications/General)

...l not be entitled to a refund of any fees paid in advance prior to such action. System and Network Security: Users are prohibited from violating or attempting to violate the security of th...