In the past we posted PHP code to generate CAPTCHA, and here is a small fix to the code that will make it more secure.

In last article I explained what CAPTCHA is and why it is used (you can find that article here). Here I will provide PHP code that crates and uses CAPTCHA.

CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart. This is a challenge-response test used on web-forms to ensure that the form is filed in by a human being, or in other words it is a form of protection from bots (computers) filling out forms.

Finnish company F-Secure, the leading supplier of Internet security software, announced the discovery of the first in history SMS Worm that infects cell phones.

Viral Marketing is a marketing strategy that uses social networking websites to increase peoples awareness about the brand or to raise product sales through self-reproducing viral process, like the spreading of computer and pathological viruses.