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[–] xbryn 0 points 1 points (+1|-0) ago 

It shows a hacked computer broadcasting the data through a computer’s LED light, with a drone flying nearby reading the pattern.

Why not just have the drone record the screen?

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[–] Donbuster [S] 0 points 1 points (+1|-0) ago 

What if it's a headless server? Or there's a privacy shield on the monitor. Both are very possible for a system important enough to be airgapped