A Comprehensive Study on Recent Botnet

Most of the email spams, DDos attacks and click frauds are caused by compromised machines which form botnets Botnets are also used for information thefts, either personal or coporative. Mordern Botnets such as Mirai primarily targets online consumer devices such as remote cameras and home routers. Network formed by infected machines under the control of controller or Botmaster is called Botnet. It has been a serious threat to The Internet community since the advent of EggDrop during the year 1993 which is considered as the first recognized IRC bots. These types of networks were created to implement illegal activities, disturbing the normal activities of legitimate users. Though research on this topic is of great importance and has been going on for years, the researchers often face difficulty due to privacy issues for examination of packets and legal issues. This paper reviews and discusses the working of modern botnets (2010 onwards) like TDL4, Zues, Kelihos, Ramnit, Chameleon and Mirai and methods to detect and prevent them based on previously published studies. This paper also discusses the notable and insistent problems that researchers are facing.