FILE PHOTO - An aerial view shows the National Security Agency (NSA) headquarters in Ft. Meade, Maryland, U.S. on January 29, 2010. REUTERS/Larry Downing/File Photo

The decision to stop the once-secret activity, which involved messages sent to or received from people believed to be living overseas, came despite the insistence of U.S. officials in recent years that it was both lawful and vital to national security.
The halt is among the most substantial changes to U.S. surveillance policy in years and comes as digital privacy remains a contentious issue across the globe following the 2013 disclosures of broad NSA spying activity by former intelligence contractor Edward Snowden.
“NSA will no longer collect certain internet communications that merely mention a foreign intelligence target,” the agency said in a statement. “Instead, NSA will limit such collection to internet communications that are sent directly to or from a foreign target.”
NSA also said it would delete the “vast majority” of internet data collected under the surveillance program “to further protect the privacy of U.S. person communications.”
The decision is an effort to …
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