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To cite this version:Arbia Riahi Sfar, Zied Chtourou, Yacine Challal. A systemic and cognitive vision for IoT security: a case study of military live simulation and security challenges. AbstractSecuring data, objects, networks, systems and people in the Internet of Things (IoT) will have a prominent role in the research and standardization activities of the next years. The high connectivity of intelligent objects and their severe constraints lead to many security challenges, which are not included into the classical formulation of security problems and solutions. To help interested researchers to contribute to this research area, an IoT security roadmap overview is presented in this work based on a novel cognitive and systemic vision. The role of each component of the approach will be explained and relations with the other elements and their impact on the overall system will be detailed. According to the novel taxonomy of IoT vision, a case study of military live simulation will be presented to highlight components and interactions of the systemic and cognitive approach. Then, a discussion of security questions about privacy, trust, identification and access control will be provided, and different research challenges will be highlighted. KeywordsInternet of Things, security, systemic and cognitive approach, military live simulation.