Researchers Unveil EM Eavesdropping Attack on Digital Microphones, Intercepting Audio Through Walls Using FM Demodulation

Sound of Interference: Electromagnetic Eavesdropping Attack on Digital Microphones Using Pulse Density Modulation

Authors: Arifu Onishi, The University of Electro-Communications; S. Hrushikesh Bhupathiraju, Rishikesh Bhatt, and Sara Rampazzi, University of Florida; Takeshi Sugawara, The University of Electro-CommunicationsAbstract: We introduce a novel electromagnetic (EM) side-channel attack that allows for acoustic eavesdropping on electronic devices. This method specifically targets modern digital microelectromechanical systems (MEMS) microphones, which transmit captured audio via pulse-density modulatio...