International Journal of Computer Science and Network
A Wireless Sensor Network (WSN) consists of distributed autonomous sensors to closely monitor physical or environmental conditions (such as temperature, sound, vibration, pressure, motion or pollutants). Wireless platforms are less expensive and are more powerful, with usage in enabling the promise health science to military sensing operations. The wireless sensor networks are prone to more attacks than wired networks. However, the hardware simplicity of these devices makes defense mechanisms designed for traditional networks infeasible. This paper studies the security aspects of wireless sensor networks. A survey with attacks and countermeasures is carried out, in particularly network layer.