If it's a state sponsored spy, the background check would not find that out. I thought it was a given that nations would recruit people to be spies, but they'd

If it's a state sponsored spy, the background check would not find that out. I thought it was a given that nations would recruit people to be spies, but they'd have a normal, successful, career. I would be shocked if every big country doesn't have well placed people in various top industry positions. In fact, as a Canadian, I'd be upset if Canada isn't doing that. It seems so easy, cheap and potentially highly effective.