Security Attacks and Its Countermeasures in Wireless Sensor Networks - A

Advancements in hardware manufacturing and the enhancements of effective software mechanisms has led to development of networks consisting of cost-effective sensor nodes communicating via wireless medium. These networks are termed as Wireless Sensor Networks (WSN). Although many communication protocols are designed for routing, security is a threat to these networks. In this paper, we present an overview of wireless networks, how they differ from other networks and the underlying security issues are discussed. The conventional attacks on WSN are summarised and survey presents several security issues related to it.