Know What They Call... Spy vs. Spy vs. Spy vs Spy?

A tranche of fresh Snowden leaks... detailing the bizarre, fractal practices of "fourth-party collection" and "fifth-party collection."

 "Fourth party collection" is the practice of spying on spy agencies to gather all the data they're taking in. "Fifth-party collection" is the practice of spying on spies who are spying on other spies. Really.
(more)