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>I have some professional experience in the field [...] That won't work on optic fibers. I'm not a professional in this field like you, but even I know that un
by FirmwareBurner 1y ago
>I have some professional experience in the field [...] That won't work on optic fibers.
I'm not a professional in this field like you, but even I know that undersea fiber optic cables have actively powered repeaters/amplifiers spread across their length, so it's logical to assume those amplifiers, with their 16kW power source, generate quite some EMF at repeater points that could be picked up via side channel analysis by sophisticated and well funded state actors like US submarines equipped with dedicated surveillance equipment, as we can infer from the Snowden NSA leaks.
- goku12 1y agoI did consider the possibility of tapping signals using the EMI from the repeaters and amplifier pumping lasers. But an OFC carries an incredible amount of data over several individual fibers. And each individual fiber carries several channels using multiplexing (WDM). I don't think that their timing is synchronized either. In short, I find it hard to believe that these signals can be practically tapped from the EMI from the supporting systems. Of course, I could be completely wrong. I wouldn't mind being proven with any sort of relevant literature.