With the proliferation of fairly powerful mobile devices and ubiquitous wireless technology, there is a transformation from traditional ad hoc networks into a new era of service-oriented Internet of Things (IoT) networks wherein an object can provide and receive services. One of the principal conceptions of IoT is to socialize the objects. A social IoT system is a mixture of IoT and social networks, where objects inde- pendently create social relationships among other objects in the vicinity and search the most trusted objects to render services required when they remain connected with each other. We propose a service-oriented trust management scheme for detecting the adversarialattacks that ex- ist in the SIoT network to build a reliable system. The proposed scheme integratesmultiple constituents such as trust metrics, intended trust and recurrent trust update to determinethe trust score among objects. We aggregate all the trust metrics to select the best metric for assessing each object that provides service; thus, an object with the lesser score is identified and filtered out efficiently. Simulation results demonstrate the efficacy of the proposed trust management scheme against co-relative service attack.
