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Relaxing Integrity Requirements for Attack-Resilient Cyber-Physical Systems by Jovanov, Ilija; Pajic, Miroslav is a scholarly article available to read on EtoBox.

What is Relaxing Integrity Requirements for Attack-Resilient Cyber-Physical Systems about?

The increase in network connectivity has also resulted in several high-profile attacks on cyber-physical systems. An attacker that manages to access a local network could remotely affect control performance by tampering with sensor measurements delivered to the controller. Recent results have shown that with network-based attacks, such as Man-in-the-Middle attacks, the attacker can introduce an unbounded state estimation error if measurements from a suitable subset of sensors contain false data when delivered to the controller. While these attacks can be addressed with the standard cryptographic tools that ensure data integrity, their continuous use would introduce significant communication and computation overhead. Consequently, we study effects of intermittent data integrity guarantees on system performance under stealthy attacks. We consider linear estimators equipped with a general type of residual-based intrusion detectors (including $\chi^2$ and SPRT detectors), and show that even when integrity of sensor measurements is enforced only intermittently, the attack impact is significantly limited; specifically, the state estimation error is bounded or the attacker cannot remain s

Author

Jovanov, Ilija; Pajic, Miroslav

Published

2017

Language

EN