Semantic-Driven Secured Data Access in Distributed IoT Systems

Internet of Things (IoT) is everywhere and expanding. While we all enjoy the benefits and the convenience of the IoT services in our everyday life, very few of us are aware of the security risks we are exposed to when IoT acquired data is not properly handled. The sensitivity of this data requires increased precaution in its protection and ability to validate the access control correctness in design time. In the IoT domain, the main focus is real time contextual actuation based on a small amount of up-to-date data. Although the raw IoT data has no deeper meaning, when a semantic abstraction is added, it becomes suitable for reasoning, fusing and actuation. With the semantics in hands, it is easier to integrate the distributed IoT devices. In this paper we evaluate the Linked Data Authorization (LDA) platform for semantic data access control in the IoT context. The LDA platform provides contextual protection of semantic data using flexible security policies that can be validated in design time. We demonstrate that this platform performs well when protecting decent amount of fresh data with respect to the context.