Seek Digital Library
At a present time lots of compromised computers also known as botnets, represents a very serious threat to Internet security. Botmaster have developed the ability of controlling large network of infected hosts, characterized by complex executable command set. In this paper, the authors have brief review of the recently approach related botnet detection, measurement and analysis. They will propose common process model for botnet detection and also concluded by presenting the identified research challenges in the botnet defense.