Abstract :
the sensing technology combined with processing power and wireless communication makes it profitable for being exploited in great quantity in future. Some researchers are fighting to develop improved WSN protocols, others are attempting to ameliorate node design; still others are working to resolve security issues including the focal WSN security risk of insecure radio links with snooping and information corruption possible. Most security mechanisms that exist today require exhaustive memory which is the limiting factor in wireless sensor networks. This paper discusses typical restrictions, security objectives, threat models and distinctive attacks on sensor networks and their protective techniques or countermeasures relevant to the sensor networks, including security approaches. The most risky area prone to attack is nearby the base station as the data is more aggregated, that should be kept secure using a number of defensive techniques.
NaturalLanguageKeyword :
Attacks , Threats , security mechanism , Wireless Sensor Network
