USEIT is a project that is developing and integrating technologies towards the empowerment of the day to day user of the Internet of Things technology through the secure management of their personal data. This chapter will give an overview of the project, its objectives, its architecture and the actual platform that is developed towards the secure management of user data. To show this secure data management, we present a use case of a Smart Building, and how the data sent from different sensors in the building is analysed and the security measures are taken under the orchestration of a building manager who sets the necessary policies in place, so that end users can securely receive information.