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arXiv · 2002.01557

The Vulnerability of Cyber-Physical System under Stealthy Attacks

Tianju Sui·Yilin Mo·Damián Marelli·Ximing Sun·Minyue Fu
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Abstract

In this paper, 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.

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Tianju Sui, Yilin Mo, Damián Marelli, Ximing Sun, Minyue Fu. 2020-02-04. The Vulnerability of Cyber-Physical System under Stealthy Attacks. https://arxiv.org/abs/2002.01557

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