I think there is a Hollywood perception of how classified document handling occurs, which is quite different to actual practice. The whole system runs at 'syst

I think there is a Hollywood perception of how classified document handling occurs, which is quite different to actual practice. The whole system runs at 'system high' mode, both computers and people, which is that everything with access is trusted, on penalty of prison time if you even make a mistake. Events are logged but not necessarily verified in real time. There are no metal detectors or routine cavity searches. The risk of leaks is treated by compartmentalisation of information. There are a few fields, like crypto, where special hardware is used to handle data (e.g. KYK fill devices), but they would be the exception. These techniques were implemented after the Walker spy ring leaked all the USN keymat to the USSR for decades. Its typical that innovation was only allowed to occur in response to a problem. Who is to say the Russians/Chinese/* have not been paying an insider for the same access that Snowden had?