Looked for the publishing date when I read the line with the signal site. I’m sure it’s harder today to find the communication methods of spies when they can use any website.
That can also make it easier to find the communication method, as the CIA has a history of leaving their random website communication unencrypted and indexed by Google.
Every keystroke on every device of every employee with access to sensitive data? Not sure how that would be implemented, do you think all their phones and private devices have some government Spyware running hidden in the background? Could be, but who knows…
Sure, you are right. The article basically says: “don’t do it cause we will catch you for sure” & “only people with character flaw as would consider doing it anyways”.
My point was mostly about the mention of catching spies when the approach signal stations.