Black & White Path
May 5, 2026 · Information Security
How Ordinary Fiber Optic Cables Can Be Repurposed as Hidden Microphones
Researchers at Hong Kong Polytechnic University demonstrated that standard FTTH fiber cables can be turned into passive acoustic eavesdropping devices that capture speech over 50 meters, defeat RF scanners and ultrasonic jammers, and achieve sub‑20% word‑error rates using AI transcription.
NDSS 2026acoustic eavesdroppingfiber optics
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