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Fiber-Optic cables could be used to spy on people a kilometer away

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Fiber-Optic cables could be used to spy on people a kilometer away

A device can eavesdrop on someone talking near a fibre-optic cable, even if there is a large distance between them

https://www.newscientist.com/article/2330763-fibre-optic-cables-could-be-used-to-spy-on-people-a-kilometre-away/#Echobox=1658955847

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