Controlled Cloud Based SaaS Service Scheme to Denial the Hotspot Locating Attacks in Wireless Sensor Networks

Abstract

The wireless sensor networks opponent can make use of the traffic informations to locate the monitored objects in Software as a service(Saas) , e.g., to identify the opponent soldiers. In this paper, we first define a hotspot phenomenon through SaaS and it causes an obvious inconsistency in the network traffic pattern due to the large volume of packets originating from a small area in Partial controlled cloud based scheme . Second, we develop a realistic opponent model, assuming that the opponent can monitor the network traffic in multiple areas, rather than the entire network or only one area. Using this model, Hotspot - Locating where the opponent uses traffic analysis techniques to locate hotspots. Finally, we propose a controlled cloud - based SaaS scheme for efficiently protecting against Hotspot - Locating attack by creating a controlled cloud with an irregular shape of fake traffic, inconsistency in the traffic pattern and camouflage the source node in the nodes for ming the controlled clou d . To reduce the energy cost, controlled cloud s are active only during data transmission and the intersection of controlled cloud s creates a larger merged controlled cloud , to reduce the number of fake packets and also boost preservation. Simulation and a nalytical results demonstrate that our scheme can provide stronger protection than routing - based schemes and requires much less energy than global - adversary schemes.