📖 This book proposed two approaches for secure ad-hoc on demand distance vector routing (AODV) against black hole attack in mobile ad-hoc network. The black hole attack one of such security risks in mobile ad-hoc network (MANET). In this attack, a malicious node falsely advertise shortest path to the destination node with an intention to disrupt the communication. We propose a simple, efficient and effective method for making a secure routing protoccol with minimum routing overhead to combat the black hole problem. The proposed method does not require any database, extra memory and more processing power. The simulation results show effectiveness of the proposed method.The simulation results shows the efficiency of the proposed method as throughput of the network does not deteriorate in presence of the black hole attack