" Verizon, for example, reports that it received 320,000 "law enforcement demands" for data in 2013. We know that every three months Verizon is served with a single National Security Letter that requires it to turn over the metadata of all 290 million of its customers, so what does that 320,000. "

― Bruce Schneier , Data and Goliath: The Hidden Battles to Collect Your Data and Control Your World