Wireless Sensor Networks (WSN) is a collection of wireless nodes with limited energy capabilities. These nodes may be mobile or stationary and are located randomly on a dynamically changing environment. Deployment of sensor network in remote environment makes it mainly vulnerable to battery drainage attacks. It is impossible to recharge or replace the battery power of these sensor nodes. We have reviewed various papers which shows different attacks and their effects on energy consumption.We will be proposing new attack prevention method,which will be more energy efficient.