Revolution in the field of wireless sensor network came with many research areas. Due to the dynamic topology and mobility of nodes, Wireless Sensor Networks (WSNs) are more vulnerable to security attacks than conventional wired and wireless network. Black hole attack is one of them. It is a very severe attack. The aim of this work is to provide the detection of black hole attack and provide a mechanism which is more satisfactory to prevent black hole attack in any circumstances. Black hole attack is a severe attack in the WSN. Actually the mobility of sensor nodes and open access medium etc....