DÏoT: A Crowdsourced Self-learning Approach for Detecting Compromised IoT Devices
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IoT devices are being widely deployed. Many of them are vulnerable due to insecure implementations and configuration. As a result, many networks already have vulnerable devices that are easy to compromise. This has led to a new category of malware specifically targeting IoT devices. Existing intrusion detection techniques are not effective in detecting compromised IoT devices given the massive scale of the problem in terms of the number of different manufacturers involved. In this paper, we present DÏoT, a system for detecting compromised IoT devices effectively. In contrast to prior work, DÏoT uses a novel self-learning approach to classify devices into device types and build for each of these normal communication profiles that can subsequently be used to detect anomalous deviations in communication patterns. DÏoT is completely autonomous and can be trained in a distributed crowdsourced manner without requiring human intervention or labeled training data. Consequently, DÏoT copes with the emergence of new device types as well as new attacks. By systematic experiments using more than 30 real-world IoT devices, we show that DÏoT is effective (96 alarms) and fast (<0.03 s.) at detecting devices compromised by the infamous Mirai malware.
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