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The Boston Globe

Nation

NSA actions spur questions on security, privacy

WASHINGTON — A leaked document has laid bare the monumental scope of the government’s surveillance of Americans’ phone records — hundreds of millions of calls — in the first hard evidence of a massive data collection program aimed at combating terrorism under powers granted by Congress after the 9/11 attacks.

At issue is a court order, first disclosed Wednesday by The Guardian newspaper in Britain, that requires the communications company Verizon to turn over on an ‘‘ongoing, daily basis’’ the records of all landline and mobile telephone calls of its customers, both within the U.S. and between the U.S. and other countries. Intelligence experts said the government, though not listening in on calls, would be looking for patterns that could lead to terrorists — and that there was every reason to believe similar orders were in place for other phone companies.

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