Trust management systems for wireless sensor networks: Best practices

Wireless Sensor Networks (WSN) have been proven a useful technology for perceiving information about the physical world and as a consequence has been used in many applications such as measurement of temperature, radiation, flow of liquids, etc. The nature of this kind of technology, and also their vulnerabilities to attacks make the security tools required for them to be considered in a special way. The decision making in a WSN is essential for carrying out certain tasks as it aids sensors establish collaborations. In order to assist this process, trust management systems could play a relevant role. In this paper we list the best practices that we consider are essential for developing a good trust management system for WSN and make an analysis of the state of the art related to these practices.