arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.14348cs.CRcs.SYeess.SY
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结合家庭环境和用户行为的灵巧家庭异常检测

Smart-home anomaly detection using combination of in-home situation and user behavior

Masaaki Yamauchi, Masahiro Tanaka, Yuichi Ohsita, Masayuki Murata, Kensuke Ueda, Yoshiaki Kato

摘要:

物联网(IoT)设备容易受到攻击者的恶意操作,这可能会对用户造成物理和经济伤害;因此,我们之前提出了一种基于序列的方法,将用户行为建模为家庭事件序列和基本家庭状态来检测异常操作。然而,该方法基于一天中的时间对用户的家庭状态进行建模;因此,攻击者可以利用系统来最大化攻击机会。因此,我们提出了一种基于估计的检测方法,该方法不仅使用一天中的时间,而且还使用家庭物联网传感器和设备的可观察值来估计家庭状态。然而,它忽略了短期的操作行为。因此,在目前的工作中,我们提出了一种行为建模方法,该方法将家庭状态估计和家庭内物联网设备的事件序列相结合,以详细了解长期和短期用户行为。我们使用从真实家庭收集的数据将所提出的模型与我们以前的方法进行了比较。与基于估计的方法相比,所提出的方法实现了15.4%的高检测率小于10%的误检测。与基于序列的方法相比,该方法的检测率提高了46.0%,误检率低于10%。

英文摘要:

Internet-of-things (IoT) devices are vulnerable to malicious operations by attackers, which can cause physical and economic harm to users; therefore, we previously proposed a sequence-based method that modeled user behavior as sequences of in-home events and a base home state to detect anomalous operations. However, that method modeled users' home states based on the time of day; hence, attackers could exploit the system to maximize attack opportunities. Therefore, we then proposed an estimation-based detection method that estimated the home state using not only the time of day but also the observable values of home IoT sensors and devices. However, it ignored short-term operational behaviors. Consequently, in the present work, we propose a behavior-modeling method that combines home state estimation and event sequences of IoT devices within the home to enable a detailed understanding of long- and short-term user behavior. We compared the proposed model to our previous methods using data collected from real homes. Compared with the estimation-based method, the proposed method achieved a 15.4% higher detection ratio with fewer than 10% misdetections. Compared with the sequence-based method, the proposed method achieved a 46.0% higher detection ratio with fewer than 10% misdetections.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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