"Another aspect of this massive population outflow hasn't yet drawn much attention. Whatever their motives and wherever they go, those who depart will be shadowed by the organs of the Leninist state they've left behind. A sprawling bureaucracy—the Overseas Chinese Affairs Office of the State Council—exists to ensure that distance from the motherland doesn't dull their patriotism. Its goal is to safeguard loyalty to the Communist Party."

That quote reminded me of this[1] New Yorker article on the first case of "economic espionage." It's an interesting read and a look into a different kind of "spying."

[1] http://www.newyorker.com/magazine/2014/05/05/a-new-kind-of-s...