Abstract: Mobile ad-hoc networks (MANETs) and wireless sensor networks (WSNs) have gained remarkable appreciation and technological development over the last few years. Despite ease of deployment, tremendous applications and significant advantages, security has always been a challenging issue due to the nature of environments in which nodes operate. Nodes physical capture, malicious or selfish behavior cannot be detected by traditional security schemes. Trust and reputation based approaches have gained global recognition in providing additional means of security for decision making in sensor and ad-hoc networks. Trust and Reputation Management Systems (TRMs) can be used to assists wireless networks in decision making process. Trust between the nodes in maintained by recording the transactions of a node with other nodes in the network, either directly or indirectly. A trust value will be calculated from the record that aids sensor nodes to deal with uncertainty about the future actions of other nodes. Trust based approaches has been widely used in popular wireless communication networks such as WSNs, IoT, MANETs, DTNs and VANETs. This talk focuses on design considerations and challenges in trust management systems.

Dr. Adnan Ahmed Arain ( Department of Telecommunication Engineering, Quaid-e-Awam University of Engineering, Science and Technology (QUEST), NawabShah. Pakistan )