Re: Air gaps are all about physical security
Blinkenlights exfiltration has been done - a lot. The twist on this is NIC blinkenlights, which haven't been bothered with, because the NIC is usually at the back of the machine, and hard to surreptitiously monitor; also, you have actual network traffic that will pollute the data stream, or the machine is unplugged (actual air-gap, not just an air-gapped network), so no lights to blink.
Biting the hand that feeds IT
