Researchers from the Warren B. Nelms Institute, led by Dr. Sara Rampazzi, and from the University of Electro-Communications in Tokyo have discovered a new attack that exposes devices’ MEMs microphones to potential remote eavesdropping. This work demonstrates how audio captured by microphones on everyday wireless devices like laptops and bluetooth headsets can be intercepted. Using simple FM demodulation with standard radio receivers, an attacker can remotely recover the audio heard by the device’s microphone—without any software compromise or physical access. A paper on this work will appear in USENIX 2025.

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