IoT Anomaly Detection Methods and Applications: A Survey

Abstract

Ongoing research on anomaly detection for the Internet of Things (IoT) is a rapidly expanding field. This growth necessitates an examination of application trends and current gaps. The vast majority of those publications are in areas such as network and infrastructure security, sensor monitoring, smart home, and smart city applications and are extending into even more sectors. Recent advancements in the field have increased the necessity to study the many IoT anomaly detection applications. This paper begins with a summary of the detection methods and applications, accompanied by a discussion of the categorization of IoT anomaly detection algorithms. We then discuss the current publications to identify distinct application domains, examining papers chosen based on our search criteria. The survey considers 64 papers among recent publications published between January 2019 and July 2021. In recent publications, we observed a shortage of IoT anomaly detection methodologies, for example, when dealing with the integration of systems with various sensors, data and concept drifts, and data augmentation where there is a shortage of Ground Truth data. Finally, we discuss the present such challenges and offer new perspectives where further research is required.

arXiv comment22 pages

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• Anomaly Detection in Industrial Machinery using IoT Devices and Machine Learning: a Systematic Mapping
• DyEdgeGAT: Dynamic Edge via Graph Attention for Early Fault Detection in IIoT Systems
• Process mining-driven modeling and simulation to enhance fault diagnosis in cyber-physical systems
• Cyber-Physical Systems Security: A Comprehensive Review of Anomaly Detection Techniques
• Towards Scalable IoT Deployment for Visual Anomaly Detection via Efficient Compression
• TinyML for Acoustic Anomaly Detection in IoT Sensor Networks