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Title	Anomaly Detection Using Machine Learning To Discover Sensor Tampering In Iot Systems
ID_Doc	9640
Authors	Pathak A.K.; Saguna S.; Mitra K.; Ahlund C.
Year	2021
Published	IEEE International Conference on Communications
DOI	http://dx.doi.org/10.1109/ICC42927.2021.9500825
Abstract	With the rapid growth of the Internet of Things (IoT) applications in smart regions/cities, for example, smart healthcare, smart homes/offices, there is an increase in security threats and risks. The IoT devices solve real-world problems by providing real-time connections, data and information. Besides this, the attackers can tamper with sensors, add or remove them physically or remotely. In this study, we address the IoT security sensor tampering issue in an office environment. We collect data from real-life settings and apply machine learning to detect sensor tampering using two methods. First, a real-time view of the traffic patterns is considered to train our isolation forest-based unsupervised machine learning method for anomaly detection. Second, based on traffic patterns, labels are created, and the decision tree supervised method is used, within our novel Anomaly Detection using Machine Learning (AD-ML) system. The accuracy of the two proposed models is presented. We found 84% with silhouette metric accuracy of isolation forest. Moreover, the result based on 10 cross-validations for decision trees on the supervised machine learning model returned the highest classification accuracy of 91.62% with the lowest false positive rate. © 2021 IEEE.
Author Keywords	anomaly detection; Internet of Things; machine learning; security; sensor tampering; smart city; traffic analysis

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