Secure Routing in Wireless Mobile Ad Hoc Network : Detection of attack with secure routing

Mobile Ad-hoc network (MANET) has become particularly vulnerable to intrusion, as they operate in open medium, and use cooperative strategies for network communications.We have used AODV routing protocol and we have make it more secure routing protocol and detected the black hole attack using last transmission time. Security of our approach is better than AODV's security. Here we are saving memory requirement for detection of black hole attack.