Ahahahahaha the NSA's big ass data center which runs its big ass ELINT operations is fucking huge. http://www.wired.com/threatlevel/2012/03/ff_nsadatacenter/2/ It requires sixty-five megawatts of power 24/7/365. Given its construction date, it fits with the idea that this is PRISM-related. Now, I'm going to ask you why you think a program that takes sixty-five megawatts of power to effectively run (approximately the same amount of power something like 65,000 high-end gaming PCs require) is going to fit on a fucking flash drive. A program which has no reason to be space-optimized because, FYI, it's running on a custom-built server farm that has enough hard drive space that you could probably put the library of congress on it and still it'd only be 10% full. "But they might be able to read the metadatas!" you say. Holy shit, I can look at email metadata. Beijing can and very easily could have barred HK's extradition. That is their prerogative under the "one nation, two systems" laws which govern HK-Chinese mainland interactions. Something that relates to geopolitics like this they could very easily have unilaterally barred, then told America to suck it the fuck up because how many Chinese asylees flee to America to whine about Chinese violations of human rights? Oh, yeah, and all that American bitching about Chinese hackers when they did it 15 years ago, way before Chinese hackers even were a thing. "Shut up and go eat a dick" would have been very easy to say, and unless America thinks Snowden is so important that it's worth risking a total breakdown of relations over (FYI: He isn't) and/or a cold war (FYI: He still isn't) they'd have no choice but to, well, shut up and eat a dick. There's a reason people arrested for spying are generally never arrested when they stay in the country they're spying for. Because frankly they aren't important.