Security analysis and fault detection against stealthy replay attacks

This paper investigates the security issue of the data replay attacks on control systems with the LQG controller. The attacker tries to store measurements and replay them in further times. The main novelty in this paper is stated as proposing a different attack detection criterion under the existenc...

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Veröffentlicht in:International journal of control 2022-06, Vol.95 (6), p.1562-1575
Hauptverfasser: Zaman, Amirreza, Safarinejadian, Behrouz, Birk, Wolfgang
Format: Artikel
Sprache:eng
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Zusammenfassung:This paper investigates the security issue of the data replay attacks on control systems with the LQG controller. The attacker tries to store measurements and replay them in further times. The main novelty in this paper is stated as proposing a different attack detection criterion under the existence of a packet-dropout feature in the network by using the Kullback-Leibler divergence method to cover more general problems and with higher-order dynamics. Formulations and numerical simulations prove the effectiveness of the newly proposed attack detection procedure. Unlike previous approaches that the trade-off between attack detection delay or LQG the performance was significant, in this approach it is proved that the difference in this trade-off is not considered in early moments when the attack happens since the attack detection rate is rapid and thus, the attacks can be stopped with defense strategies in the first moments with the proposed attack detection criterion.
ISSN:0020-7179
1366-5820
1366-5820
DOI:10.1080/00207179.2020.1862917