It wasn't really air-gapped if someone plugged an USB in it, was it ;) I'm aware of the "over the air" methods to _read_ data from air-gapped systems (The blin

It wasn't really air-gapped if someone plugged an USB in it, was it ;) I'm aware of the "over the air" methods to _read_ data from air-gapped systems (The blinking hard-drive light!), however I was referring to doing damage to industrial systems running legacy software, where you usually find this (think a big machine with a "terminal" attached to it that just controls the hardware and has no inputs).