ABSTRACT
Industrial Control Systems or SCADA systems are widely used in electric power, water plants, petrochemical, and transportation, aerospace and other fields, which are important parts of the national critical infrastructure and related to the national security strategy. In the early design of industrial control systems, proprietary communication protocols, operating systems and hardware were commonly used, and industrial control systems were isolated from other networks. Therefore, industry control systems are believed to be more secure, and function and physical safety get more attention; information security and network security are less considered.
