In an interview with the Associated Press, Guardian columnist Glenn Greenwald revealed that NSA whistle-blower Edward Snowden has retained "literally thousands" of extremely sensitive documents on the NSA that "would allow somebody who read them to know exactly how the NSA does what it does, which would in turn allow them to evade that surveillance or replicate it."
"I think it would be harmful to the U.S. government, as they perceive their own interests, if the details of those programs were revealed," he said.
The AP reports, however, that a source close to Snowden has said that the whistle-blower does not want the documents to be made public.
Prachi Gupta is an Assistant News Editor for Salon, focusing on pop culture. Follow her on Twitter at @prachigu or email her at firstname.lastname@example.org.