A Survey on Intrusion Detection in Encrypted Environment

In recent years the Internet has evolved into a critical communication infrastructure that is omnipresent in almost all aspects of our daily life. This dependence of modern societies on the Internet has also resulted in more criminals using the Internet for their purposes, causing a steady increase of attacks, both in terms of quantity as well as quality. The objective of this paper is to review the recently used intrusion detection techniques. First, intrusion detection is done based on knowledge, then we used detection based on behaviour. Now, the current technique used is detection of intrusion without knowing the behaviour of benign activities in prior. Moreover, the current technique demonstrates its effectiveness when compared with other intrusion detection techniques published recently. The results reveal that the current detection system is accurate. Finally, possible future directions are suggested.