Wireless sensor network security threats

Wireless Sensor Networks (WSNs) need effective security mechanisms because these networks deployed in hostel unattended environments. Due to inherent limitations in wireless sensor networks, security is a crucial issue. While research in WSN security is progressing at tremendous pace, no comprehensive document lists the security issues and the threat models which pose unique threats to the wireless sensor networks. There are many parameters affect selecting the security mechanism as its speed and energy consumption. The intent of this paper is to investigate the security related issues and challenges in wireless sensor networks. We identify the security threats, review proposed security mechanisms for wireless sensor networks.