Ars Technica: New “Glowworm attack” recovers audio from devices’ power LEDs
Ars Technica: New “Glowworm attack” recovers audio from devices’ power LEDs. “Researchers at Ben-Gurion University of the Negev have demonstrated a novel way to spy on electronic conversations. A new paper released today outlines a novel passive form of the TEMPEST attack called Glowworm, which converts minute fluctuations in the intensity of power LEDs on speakers and USB hubs back into the audio signals that caused those fluctuations.”