As MANETS (Mobile Ad hoc Networks) is quickly spreading for the property of its capability in forming temporary network without the aid of any established infrastructure or centralized administration, security challenges has become a primary concern to provide secure communication. Security in Mobile Ad-Hoc Network is the most important aspect for the basic functionality of network. MOBILE Ad hoc Networks (MANETs) are wireless networks which are characterized by dynamic topologies and have no fixed infrastructure. As such detection of a good neighbor node is a necessity. In the routing protocol called Quality of Service Good Neighborhood Node Detection Algorithms (QOS-GNDA) author find the good node but if malicious node present in network and if it makes entry in routing path then it causes security threat to sensitive data so we find the new Enhanced Quality of service Good Neighbor Node detection technique .we use Enhanced Highly Secure Approach against Attacks on MANETs (EHSAM) to overcome the data tempering problem.