People who watch the surveillance state have known about this stuff since the early 1980s. My personal theory is that spooks talk to each other (as spooks do) and eventually word starts to leak; it’s too clever a scam to miss. Then, when a program becomes huge enough, there are tens of thousands of people using the data from it; it’s pretty easy to figure out where the data is coming from. I first encountered the international reach-around when I was at a conference and wound up talking to an interesting fellow who turned out to be a journalist that had been investigating the surveillance state for a very long time.