On demand set up, fault tolerance and unconstrained connectivity are couple of advantages because of that mobile computing continues to enjoy rapid growth. However, it can be expected that security attacks are likely to increase in the coming future due to the more and more wireless applications being developed and deployed on to the well-known expose nature of wireless medium. Thanks to the substantial research efforts carried out by the community so far, following contribution is made in this paper. This paper specifically takes real life application of mobile ad-hoc networks i.e. VANET (Vehicular Ad-hoc NETworks).