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As technology becomes more widely available, millions of users worldwide haveinstalled some form of smart device in their homes or workplaces. These devicesare often off-the-shelf commodity systems, such as Google Home or SamsungSmartThings, that are installed by end-users looking to automate a smalldeployment. In contrast to these "plug-and-play" systems, purpose-builtEnterprise Internet-of-Things (E-IoT) systems such as Crestron, Control4, RTI,Savant offer a smart solution for more sophisticated applications (e.g.,complete lighting control, A/V management, security). In contrast to commoditysystems, E-IoT systems are usually closed source, costly, require certifiedinstallers, and are overall more robust for their use cases. Due to this, E-IoTsystems are often found in expensive smart homes, government and academicconference rooms, yachts, and smart private offices. However, while there hasbeen plenty of research on the topic of commodity systems, no current studyexists that provides a complete picture of E-IoT systems, their components, andrelevant threats. As such, lack of knowledge of E-IoT system threats, coupledwith the cost of E-IoT systems has led many to assume that E-IoT systems aresecure. To address this research gap, raise awareness on E-IoT security, andmotivate further research, this work emphasizes E-IoT system components, E-IoTvulnerabilities, solutions, and their security implications. In order tosystematically analyze the security of E-IoT systems, we divide E-IoT systemsinto four layers: E-IoT Devices Layer, Communications Layer, Monitoring andApplications Layer, and Business Layer. We survey attacks and defensemechanisms, considering the E-IoT components at each layer and the associatedthreats. In addition, we present key observations in state-of-the-art E-IoTsecurity and provide a list of open research problems that need furtherresearch.

Survey on Enterprise Internet-of-Things Systems (E-IoT): A Security Perspective