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On the Role of Information Sharing in the Security of Interconnected Systems

机译:信息共享在互联系统安全中的作用

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In this paper we consider a security problem for interconnected dynamical systems, where each subsystem aims to detect local attacks. Each subsystem has knowledge of only its local dynamics and, therefore, the subsystems share information among themselves to aid local attack detection. We develop a technique that processes the local and shared measurements and detects attacks with provable guarantees. Interestingly, we show that for some instances of the attack, the detection performance deteriorates if the subsystems share their measurements. We provide an explanation for this counter-intuitive behavior and illustrate our results through a numerical example.
机译:在本文中,我们考虑了互连动态系统的安全问题,其中每个子系统都旨在检测本地攻击。每个子系统仅了解其本地动态,因此,子系统之间共享信息以帮助进行本地攻击检测。我们开发了一种技术,该技术可以处理本地和共享的测量结果,并以可证明的保证检测攻击。有趣的是,我们表明,对于某些攻击实例,如果子系统共享其测量值,则检测性能会下降。我们提供了这种违反直觉的行为的解释,并通过一个数值示例说明了我们的结果。

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