Attack detection and identification method for sensors in presence of transient fault

Abstract

The invention provides an attack detection and identification method for sensors in the presence of a transient fault. The detection of the fault caused when the intervals of the two sensors are intersected is further judged in combination with fusion intervals, a system dynamics model is considered, and the attack detection and identification performance on the sensors is improved by utilizing historical measurement. By means of the attack detection and identification method for the sensors in the presence of the transient fault, the transient fault can be separated from an attack in a systemwith the transient fault; compared with previous attack detection methods, the method has good detection and identification performance on various types of attacks, in particular on stealth attacks;this type of attacks cannot be detected by means of the previous methods, but the detection and identification rate of the method can reach 90% or above on average.

Description

Technical field: [0001] The invention relates to a sensor attack detection and identification method when there is a transient fault, in particular to a sensor attack detection method based on the pairwise inconsistency relationship between sensors, which belongs to the field of CPS system security and is mainly used for A CPS system that measures the same physical variable (eg speed). Background technique: [0002] With the widespread application of Cyber-Physical Systems (CPS) in security-critical fields (such as: medical systems, intelligent transportation systems, national defense and power systems, etc.), it is necessary to ensure the security of such systems. Therefore, more and more people begin to pay attention to the security issues of CPS. Malicious attackers exploiting security holes can have catastrophic effects on the CPS system, thereby compromising its security. For example, recent research has found that attackers could exploit vulnerabilities in in-vehicle...

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Problems solved by technology

Furthermore, most methods of detecting malicious attacks on sensors do not take into account transient faults, they treat attacks and

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