Abstract
Among the various forms of malware, Botnets are emerging as the most serious threat, Botnets, remotely controlled by the attackers, and whose members are located in homes, schools, businesses, and governments around the world.
This paper is a survey about Botnet and how Botnet is detected. The survey clarifies Botnet history, Botnet lifecycle, Botnet detection techniques, and proposed software has ability to detect (koobface) Botnet which attacks facebook website.
