Robust Defense Scheme against Selective Drop Attack in Wireless Ad-hoc Networks

Detecting packet drop attacks is important for security of MANETs and current random audit based mechanism cannot detect collaborative attacks. In this we design a hash function bash method to generated node behavioral proofs that contain information from both data traffic and forwarding paths. The new method is robust against collaborative attacks described in the paper and it introduces limited computational overhead on the intermediate nodes. We investigate the security of the proposed approach and design schemes to further reduce the overhead.