A Survey on Discovery and Prevention of Black-Hole Attack in WSN

Wireless Sensor Networks (WSN) is a rising innovation now-a-days and has an extensive variety of uses for example traffic surveillance, forest fire detection, battlefield surveillance, flood detection etc. but WSN can be affected by various attacks which obstructs ordinary operation of the system. Security and reliability of sensor network is less because of arbitrary architecture of sensor nodes in open environment, power limitations, memory limitations and unattended nature.Generally, two types ofAttacks are in WSNactive attacks and the passive attacks. Black-hole attack is injurious active attacks. In this review paper we have reviewed some technique which are for discovery and prevent black-hole attack.