Joint detection algorithm based on electromagnetic leakage signal and knock frequency

This paper proposes a detection method for malicious Universal Serial Bus (USB) devices, which combines the analysis of electromagnetic leakage signal characteristics with the tap frequency logs. In light of the increasing security threats posed by malicious USB devices in daily applications, this study aims to conduct a comprehensive security assessment of USB devices by capturing the electromagnetic leakage signals generated during the operation of USB devices and combining the tap frequency characteristics generated by the devices. This method can effectively identify potential malicious USB devices, providing strong support for the security of computer systems and network environments.