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Recently, there has been a sharp increase in the production of smart devices and related networks, and consequently the Internet of Things One concern for these devices, which is constantly becoming more critical, is their protection against attacks due to their heterogeneity and the absence of international standards to achieve this goal Thus, these devices are becoming vulnerable, with many of them not even showing any signs of malfunction or suspicious behavior The aim of the present work is to introduce a circuit that is connected in series with the power supply of a smart device, specifically an IP camera, which allows analysis of its behavior The detection circuit operates in real time (real-time detection), sampling the supply current of the device, processing the sampled values and finally indicating any detection of abnormal activities, based on a comparison to normal operation conditions By utilizing techniques borrowed by simple power analysis side channel attack, it was possible to detect deviations from the expected operation of the IP camera, as they occurred due to intentional attacks, quarantining the monitored device from the rest of the network The circuit is analyzed and a low-cost implementation (under 5US$) is illustrated It achieved 100% success in the test results, showing excellent performance in intrusion detection

A Power Dissipation Monitoring Circuit for Intrusion Detection and Botnet Prevention on IoT Devices