IoT Security Foundation. This whitepaper outlines the benefits that accrue by taking a hub-based approach to connecting IoT devices and systems in the enterprise. It proposes a hub-centric architecture approach that will accommodate contemporary and future possibilities. The hub architecture provides an extra layer of defence for the wider enterprise network and for those devices that may have minimal or no built-in security features. By aggregating information at a single point, all devices or groups of devices and other hubs, such as gateways deployed within the local IoT network, are managed centrally. This approach provides a robust and secure architecture beyond other options such a ‘tree’ or ‘hub-and-spoke’.