Hybrid attack monitor design to detect recurrent attacks in a class of cyber-physical systems
Hybrid attack monitor design to detect recurrent attacks in a class of cyber-physical systems
复制标题
混合攻击监视器设计，用于检测一类网络物理系统中的重复攻击
DOI：
10.1109/cdc.2017.8263845
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Sanfelice, Ricardo G.
中科院分区：
文献类型：
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作者：
Phillips, Sean;Duz, Alessandra;Pasqualetti, Fabio;Sanfelice, Ricardo G.
在本文中，我们研究了一类由离散计算机化组件与连续代理交互组成的网络物理系统中攻击检测的安全问题。我们考虑攻击者可能在代理的物理动态和离散交互中注入重复信号。我们将这些攻击建模为具有适当输入签名和时序特征的加性未知输入。利用混合系统建模工具，我们设计了一种新的混合攻击监视器，并在合理的假设下，表明它能够检测到所考虑的反复攻击类别。最后，我们使用特定的有限时间收敛观测器说明了一般混合攻击监视器，并展示了其在自动驾驶汽车云连接网络的简化模型上的有效性。
In this paper, we study a security problem for attack detection in a class of cyber-physical systems consisting of discrete computerized components interacting with continuous agents. We consider an attacker that may inject recurring signals on both the physical dynamics of the agents and the discrete interactions. We model these attacks as additive unknown inputs with appropriate input signatures and timing characteristics. Using hybrid systems modeling tools, we design a novel hybrid attack monitor and, under reasonable assumptions, show that it is able to detect the considered class of recurrent attacks. Finally, we illustrate the general hybrid attack monitor using a specific finite time convergent observer and show its effectiveness on a simplified model of a cloud-connected network of autonomous vehicles.