Author(s): Ritu Mehta, Mr. Vinod Saroha

Now a day’s wireless Sensor network is latest technology for data transmission but due to the open design environment of the WSN it is vulnerable to various types of attack and because it is used in various critical application like health care, smart building, industrial application, smart grids and energy control system etc. Thus there is a necessity of a mechanism that prevents these attacks i.e. intrusion detection system. In this paper we mainly focus in ids in WSN environment that is based on spy node and voting based mechanism show implementation result which describes the effectiveness of our ids as compare to normal ids in WSN environment.