NSA Collecting Phone Records of Millions of Verizon Customers Daily

Citation
Glenn Greenwald, NSA Collecting Phone Records of Millions of Verizon Customers Daily, The Guardian (June 5, 2013) (full-text).

Overview
This was the first of a series of articles based on unauthorized disclosures of classified documents by Edward Snowden, a contractor for the National Security Agency (NSA). The article described an NSA program to collect millions of telephone records, including records about purely domestic calls.