High-speed railway signal system information security analysis and countermeasures

For a long time, the railway signal system adopts a dedicated closed network without problems such as external intrusion and network virus transmission. However, because of the high-speed and real-time data sharing requirements between the high-speed railway signal system and each subsystem, the network has seen an unprecedented openness. In recent years, with the new virus and attack in industrial control system appearing, such as Stuxnet and APT, new challenges are brought to the information security of high-speed signal system. This paper focuses on the system composition, the system information interaction mode as well as the system safety measures. Meanwhile, this paper also analyzes the threats to the system information security, then gives a solution in the point of view of industry control safety management.