Pedram Amini - Dept. of Information and Communications Technology Malek-Ashtar University of Technology Tehran, Iran
Muhammad Amin Araghizadeh - Dept. of Electrical and Computer Engineering University of Tehran Tehran, Iran
Reza Azmi - Dept. of Technical and Engineering Alzahra University Tehran, Iran

In recent years, Botnets have become an important security problem on the Internet. Botnets have used for many attacks, such as banking information theft, spam, distributed denial-of-service (DDoS), identity theft and phishing. Then, they have been proposed as a major research topic in network security. Although there are several surveys on the Botnets, they usually do not include a complete review on Botnet phenomenon. This paper is a survey on Botnet that provides a brief of classifications, techniques and algorithms of Botnet detection and defense. In this survey, we provide a comparison on existing researches. We present an overview of studies on Botnet and discuss in detail including topologies, architectures, communication protocols, infection mechanisms, attacks, purposes, prevention techniques, detection sources, detection data, detection techniques, detection algorithms and response techniques.

Network Security, Botnet, Botnet Classification, Botnet Detection, Bonet Defense, Survey