An American citizen who works for Britain’s Guardian newspaper and lives in Rio de Janeiro, Greenwald was the journalist who first revealed classified documents provided by Snowden that outlined the extent of U.S. communications monitoring activity at home and abroad.
Greenwald said on Sunday in a Twitter message that he had worked with O Globo on the reports to relay more quickly the scope and reach of the alleged surveillance. The bulk of Greenwald’s stories thus far have appeared in the Guardian.
As disclosed by Snowden to the Guardian, the NSA’s “Prism” program collated mail, Internet chat and files directly from the servers of companies such as Google, Facebook and Skype.
O Globo cited documents saying that NSA agents carried out “spying actions” via “Boundless Informant,” which it said cataloged telephone calls and access to the Internet.