Add this item to the list of benefits/disadvantages of U.S. citizenship?
According to the former officials, U.S. cyberspies, most from military units who’ve received specialized training, sit at consoles running sophisticated hacking software, which funnels information stolen from computers around the world into a “fusion center,” where intelligence analysts try to make sense of it all. The NSA is prohibited by law from spying on people or entities within the U.S., including noncitizens, or on U.S. citizens abroad. According to one of the former officials, the amount of data the unit harvests from overseas computer networks, or as it travels across the Internet, has grown to an astonishing 2 petabytes an hour—that’s nearly 2.1 million gigabytes, the equivalent of hundreds of millions of pages of text.
Source: How the U.S. Government Hacks the World / Bloomberg BusinessWeek (May 27-June 22, 2013) 36