Comment by specialist
8 hours ago
Yup.
My father worked in defense. He shared lore about the genesis of tempest, the requirement to use faraday cages to protect secrets, gear, etc.
The story goes that some kind of red team set up shop down the road from some missile tests (or something) with some simple gear. Afterwards, they shared the launch codes used, shocking all the brass. Hence the need for shielded comms.
I was under the impression that in actual practice all the launch codes are set to 0000. Wouldn't want to delay a launch because someone forgot the code. (I'm only half joking)
It has been speculated many times that the US would not have been able to respond to a nuclear attack on purpose, but was likely to start one by accident.