The vulnerability of cyber-physical system under stealthy attacks

Title: The vulnerability of cyber-physical system under stealthy attacks
Creator: Sui, Tianju; Mo, Yilan; Marelli, Damian; Sun, Ximing; Fu, Minyue
Relation: IEEE Transactions on Automatic Control Vol. 66, Issue 2, p. 637-650
Publisher Link: http://dx.doi.org/10.1109/TAC.2020.2987307
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Resource Type: journal article
Date: 2021
Description: In this article, we study the impact of stealthy attacks on the cyber-physical system (CPS) modeled as a stochastic linear system. An attack is characterised by a malicious injection into the system through input, output or both, and it is called stealthy (resp. strictly stealthy) if it produces bounded changes (resp. no changes) in the detection residue. Correspondingly, a CPS is called vulnerable (resp. strictly vulnerable) if it can be destabilized by a stealthy attack (resp. strictly stealthy attack). We provide necessary and sufficient conditions for the vulnerability and strictly vulnerability. For the invulnerable case, we also provide a performance bound for the difference between healthy and attacked system. Numerical examples are provided to illustrate the theoretical results.
Subject: control system analysis; cyber-physical systems; stochastic systems; security
Identifier: http://hdl.handle.net/1959.13/1449177
Identifier: uon:43593
Identifier: ISSN:0018-9286
Language: eng
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