Man in the Middle Attack Mitigation in Internet of Medical Things

The Internet of Medical Things (IoMT) are susceptible to Man in the Middle (MitM) attack, which can identity healthcare emergency of monitored patients and replay normal physiological data to prevent the system from raising an alarm. In this paper, we propose a framework to prevent a MitM from disrupting the operations and prohibiting the raise of alarms by the remote healthcare monitoring system. To reduce energy consumption for normal data transmission, and preserve the privacy of health data, our framework transmits a smaller size signature derived from acquired data with message authentication code, where the key is derived from Received Signal Strength Indication (RSSI). Our experimental results for emergency detection show that our approach can achieve a high detection accuracy with a low false alarm rate of 3%.