As we transition to more complex, higher performing and energy efficient buildings, it is apparent that traditional Building Management Systems (BMS) are not up to the task of monitoring and managing today’s building operations. Therefore, the need for sustainable, reliable, user-friendly, efficient, safe and secure BMS in the context of smart critical sites is being crucial. FUSE-ITEuropean project is the ICT experts’ response that aims to develop a smart secured building system, incorporating secured share sensors, effectors and devices strongly interconnected through trusted federated energy & information networks, a core building data processing & analysis module, a smart unified building management interface and a full security dashboard. In this brief news letter, we provide an overview of the smart grid security challenges, the main FUSE-IT goals, depict its architecture and highlight potential achievements and realizations with a focus on the security aspects.