A new tool for your laptop could help fend off eavesdroppers

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Researchers at the National University of Singapore and Yonsei University in the Republic of Korea have invented a device that can detect whether malware is accessing a laptop microphone without permission.

The prototype device, codenamed TickTock, described in a paper (opens in new tab) entitled ‘TickTock: Detecting Microphone Status in Laptops Leveraging Electromagnetic Leakage of Clock Signals’, is so named because of how it monitors the electromagnetic (EM) leakage from a laptop microphone’s clock signals.

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