>First, I've never been in a SCIF as far as I know. Well, several years ago I have actually built a couple of them (actually something very similar to them, th

>First, I've never been in a SCIF as far as I know. Well, several years ago I have actually built a couple of them (actually something very similar to them, the term SCIF is US) for the military here in Italy. Though admittedly not - at least from the construction specs - to be used for this kind of air-gapped computing, they were either a "safe conference room" or a (very large) "storing safe" (to store paper documents and/or weapons). I have no idea which security measures/protocols were later employed to limit access to them, of course, but there were a number of safety features that would make physical access by any means seemingly impossible. Of course if you could impersonate someone else authorized or if you can bribe someone with legitimate access, than any construction/safety measure would be m00t, but then if you can obtain that kind of access it would be easier to simply get the data from the computer.