I'm with others: This is a silly anecdote from Crowdstrike of all companies. If I was asked how fat Kim Jong Un was, I would probably wait for some kind of "I'm kidding," and hang up if I didn't get it.
I don't believe they are earnestly identifying spies, even if they believe it. Not that they need spies to hack our system anyway, they managed to bring half the country to a halt by themselves.
https://news.ycombinator.com/item?id=43853382