Attacks & Preventions of Cognitive Radio Network-A Survey

In this paper we analyze and surveyed a latest communication technology named “Cognitive Radio Network”. Cognitive radio network is a network in which an un-licensed user can use an empty channel in a spectrum band of licensed user. It is useful as well as harmful too. Because of this some unwanted user can use this empty channel through attacks and threats. In this paper we focus on cognitive radio network attacks and how to prevent our network through these attacks.