PRISM (surveillance programme)
- Gellman, Barton; Poitras, Laura (June 6, 2013). "US Intelligence Mining Data from Nine U.S. Internet Companies in Broad Secret Program". The Washington Post. Retrieved June 15, 2013.
- Greenwald, Glenn; MacAskill, Ewen (June 6, 2013). "NSA Taps in to Internet Giants' Systems to Mine User Data, Secret Files Reveal – Top-Secret Prism Program Claims Direct Access to Servers of Firms Including Google, Apple and Facebook – Companies Deny Any Knowledge of Program in Operation Since 2007 – Obama Orders US to Draw Up Overseas Target List for Cyber-Attacks". The Guardian. Retrieved June 15, 2013.
- Braun, Stephen; Flaherty, Anne; Gillum, Jack; Apuzzo, Matt (June 15, 2013). "Secret to PRISM Program: Even Bigger Data Seizures". Associated Press. Retrieved June 18, 2013.