Cross layer Data Assessment in Wireless Sensor Networks

Wireless sensor networks (WSN) are the target of different kinds of security attacks. The network nodes, which sense, aggregate, encrypt and transmit data, play a key role for assuring data quality. In this paper we present a way in which the network sink can evaluate the nodes reputation in order to determine whether one or more nodes are behaving maliciously. The approach combines different techniques such secure localization and privacy aware transmission in order to assess both nodes reputation and data quality.