Linear system security -- detection and correction of adversarial attacks in the noise-free case

We address the problem of attack detection and attack correction for multi-output discrete-time linear time-invariant systems under sensor attack. More specifically, we focus on the situation where adversarial attack signals are added to some of the system's output signals. A 'security ind...

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Bibliographic Details
Published in:arXiv.org 2017-11
Main Authors: Tang, Zhanghan, Kuijper, Margreta, Chong, Michelle, Mareels, Iven, Leckie, Chris
Format: Article
Language:English
Subjects:
Algorithms
Discrete time systems
Security
Sensors
Time invariant systems
Online Access:Get full text
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Summary:We address the problem of attack detection and attack correction for multi-output discrete-time linear time-invariant systems under sensor attack. More specifically, we focus on the situation where adversarial attack signals are added to some of the system's output signals. A 'security index' is defined to characterize the vulnerability of a system against such sensor attacks. Methods to compute the security index are presented as are algorithms to detect and correct for sensor attacks. The results are illustrated by examples involving multiple sensors.
ISSN:2331-8422