Optimal completely stealthy attacks against remote estimation in cyber-physical systems

被引:27
|
作者
Li, Yi-Gang [1 ]
Yang, Guang-Hong [2 ,3 ]
机构
[1] Shenyang Univ Technol, Sch Artificial Intelligence, Shenyang 110870, Liaoning, Peoples R China
[2] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Peoples R China
[3] Northeastern Univ, State Key Lab Synthet Automat Proc Ind, Shenyang 110819, Peoples R China
基金
中国国家自然科学基金;
关键词
Cyber-physical system; completely stealthy attack; estimation errorv chi(2)-detector; COMPENSATION;
D O I
10.1016/j.ins.2022.01.014
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper investigates the problem of designing the optimal completely stealthy attacks in cyber-physical systems. Different from the strictly stealthy attacks in the existing results which still have the possibilities to trigger the alarm and be invalid, a completely stealthy attack model is proposed such that the attack signals are able to bypass the detector successfully without being detected. Under the framework of the attacks, the remote estimation error is analyzed by deriving the recursion of the error covariance matrix, based on which the problem of attack design is transformed into a constrained optimization problem. By employing the Lagrange multiplier method, the optimal attack policy is derived which maximizes the remote estimation error and guarantees the complete stealthiness to the detector concurrently. Finally, simulation examples are provided to illustrate the effectiveness of this work. (C) 2022 Elsevier Inc. All rights reserved.
引用
收藏
页码:15 / 28
页数:14
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