Real-Time Adaptive Sensor Attack Detection in Autonomous Cyber-Physical Systems

Akowuah, Francis; Kong, Fanxin

doi:10.1109/rtas52030.2021.00027

Cited by 19 publications

(1 citation statement)

References 44 publications

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“…In practice, it may not be possible for an attacker to have simultaneous access to all sensor/actuator communication channels or associated control devices. Each sensor/actuator may require different kinds of software/hardware tools in order to corrupt the data they send or receive [1]. 2) Replay attacks, similar to FDIAs, threaten the integrity of sensor measurements.…”

Section: B Attacker Modelmentioning

confidence: 99%

Efficient Predictive Monitoring of Linear Time-Invariant Systems Under Stealthy Attacks

Azzam

Pasquale

Provan

et al. 2023

IEEE Trans. Contr. Syst. Technol.

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Attacks on industrial control systems (ICSs) can lead to significant physical damage. While off-line safety and security assessments can provide insight into vulnerable system components, they may not account for stealthy attacks designed to evade anomaly detectors during long operational transients. In this article, we propose a predictive online monitoring approach to check the safety of the system under potential stealthy false data injection attacks (FDIAs) on sensors. Specifically, we adapt previous results in reachability analysis for attack impact assessment to provide an efficient algorithm for online safety monitoring for linear time-invariant (LTI) systems. The proposed approach relies on an off-line computation of symbolic reachable sets in terms of the estimated physical state of the system. These sets are then instantiated online, and safety checks are performed by leveraging ideas from ellipsoidal calculus. We illustrate and evaluate our approach using the Tennessee-Eastman process. We also compare our approach with the baseline monitoring approaches proposed in previous work and assess its efficiency and scalability. Our evaluation results demonstrate that our approach can predict in a timely manner if an FDIA will be able to cause damage while remaining undetected. Thus, our approach can be used to provide operators with real-time early warnings about stealthy attacks.

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Section: B Attacker Modelmentioning

confidence: 99%