Poster: Trust-based routing with neighborhood connectivity to prevent single and colluded active black hole

Active black hole attack is one of the most severe security threats that can be easily employed against normal routing in mobile ad hoc networks (MANETs). Most of the existing defense schemes are not effective for the internal attackers that know how the scheme works. In this paper, we propose a neighborhood connectivity based trust scheme that can detect the single and colluded attackers during route discovery and quarantine them. Even the internal attackers cannot get any benefit to launch the active black hole attacks.