International Publisher for Advanced Scientific Journals (IPASJ)
Recent advancements in MEMS technologies and development in the area of low power microcontrollers have resulted as implementation of Wireless Sensor Networks (WSNs) in real life problem solving in areas like traffic monitoring, patient monitoring and battlefield surveillance. These wireless sensors are very small in size and are operated at low power for low data rate applications. WSN nodes include features like scalability, self-organizing, self-healing. WSN nodes face many challenges starting from deployment till their life span which is dependent on very low battery strength. Since these nodes are operated in unattended environments, many security threats are for them to survive.