I don't have any links handy, but I have definitely read reports of sabotage and wiretapping. Edit: ah, from another comment down-thread: https://en.wikipedia.

I don't have any links handy, but I have definitely read reports of sabotage and wiretapping. Edit: ah, from another comment down-thread: https://en.wikipedia.org/wiki/Operation_Ivy_Bells https://en.wikipedia.org/wiki/Operation_Ivy_Bells