Pulse of Truth

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Fiber Optic Cables Turned Into Hidden Microphones to Secretly Spy on Your Conversations (cybersecuritynews.com)

submitted 3 days ago by lemmydev2@infosec.pub to c/pulse_of_truth@infosec.pub

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Researchers at NDSS 2026 demonstrate a covert acoustic eavesdropping attack that transforms standard FTTH telecom fiber cables into passive, undetectable listening devices invisible to RF scanners and immune to ultrasonic jammers. Security researchers from The Hong Kong Polytechnic University, The Chinese University of Hong Kong, and the Technological and Higher Education Institute of Hong Kong […] The post Fiber Optic Cables Turned Into Hidden Microphones to Secretly Spy on Your Conversations appeared first on Cyber Security News.

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[–] kalapala@sopuli.xyz 21 points 3 days ago

"Because standard fiber alone is not sensitive enough to capture airborne speech, the researchers engineered a custom “Sensory Receptor” — a hollow PET (polyethylene terephthalate) cylinder, 65mm in diameter, with 15 meters of optical fiber tightly wound around it."