信息物理融合系统综合安全威胁与防御研究

Cyber-physical system (CPS) is an intelligent system consisting of computing units and physical objects that highly interact with each other through the network. The combination of cyber system and physical system is promoting the performance of the CPS. At the same time, it also introduces a new integrated security threat into CPS, which combines engineering safety threat of physical system and information security threat of cyber system. In this paper, concepts and security status of CPS are introduced, and the concept of CPS integrated security is defined. After analyzing several existing security accidents in CPS, a new threat model of CPS integrated security is proposed. Existing CPS attacks and defense methods are classified and summarized from a perspective of temporal and spatial correlation. The future research of CPS integrated security is discussed.