Security of web forms

Abstract

This paper delivers some basic information about the security of web forms from web bots (robots). Possible threats are described and the article gives a list of some methods which can be used to protect web forms. The emphasis is on the CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) method that is most often used method. At the end of paper you can find one implementation of security methods using PHP and MySQL technologies.