Abstract: The need of wireless network is to enforce participating nodes to forward packets to other nodes to foster secure and reliable communication. Although there are presence of vulnerable nodes that can be associated with malicious nodes and can harm networks. The varieties of these malicious nodes are vulnerable to nodes which are either compromised or falsely guided by vulnerable nodes. Malicious nodes can easily tamper the participating nodes in the networks. In mobile ad hoc network these attacks shown their significance in the terms of network worms which can attack, alter or modify the root definitions of network across all administrative and participating domains. This paper reviews the full study to eliminate thread of black hole attacks in MANET”. We also address to the solution against the threat of black hole attack in MANET. In Black Hole Attack a malicious node advertises itself as having the shortest path to the node whose packets it wants to intercept. So to rectify the possibility of occurrence of black hole attack we are proposing a technique to identify attack and a solution to discover a safe route for secure transmission. We are proposing here a Secure Ad-hoc On-Demand Distance Vector routing protocol (SAODV) to endeavor our all efforts into a common place. So the emphasis is to develop a scheme for the measure of these network worms and blackhole attacks to eliminate occurrences of communication hazards from intermediate and surrounding threads.