Abstract:The distinctive aspect of Mobile Ad Hoc Networks (MANETs), including dynamic network topology, susceptible wireless medium, limited battery power, network overhead are highly vulnerable and remains as major issues in designing Intrusion Detection Systems (IDS). This paper proposes a framework of Anomaly IDS with Subjective logic based Trust (AID-ST) system to discern and eradicate the intruders from the network. AID-ST system incorporates multi-dimensional trust parameters and subjective logic theory to effectively detect and confirm the attack behavior. The system measures indirect trust of a node using subjective logic theory, and IDS estimates trustworthiness of a suspected node by collecting and combining the evidence from various observers. The simulation results depict that the AID-ST attains high performance in terms of detection accuracy, overhead, and energy consumption when compared to existing AIPD AODV.