Public Intelligence Blog

WASHINGTON — Since 2010, the National Security Agency has been exploiting its huge collections of data to create sophisticated graphs of some Americans’ social connections that can identify their associates, their locations at certain times, their traveling companions and other personal information, according to newly disclosed documents and interviews with officials.

The spy agency began allowing the analysis of phone call and e-mail logs in November 2010 to examine Americans’ networks of associations for foreign intelligence purposes after N.S.A. officials lifted restrictions on the practice, according to documents provided by Edward J. Snowden, the former N.S.A. contractor.

The policy shift was intended to help the agency “discover and track” connections between intelligence targets overseas and people in the United States, according to an N.S.A. memorandum from January 2011. The agency was authorized to conduct “large-scale graph analysis on very large sets of communications metadata without having to check foreignness” of every e-mail address, phone number or other identifier, the document said. Because of concerns about infringing on the privacy of American citizens, the computer analysis of such data had previously been permitted only for foreigners.

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BLUFFDALE, Utah — AT the Husband and Wife lingerie store here in Mormon country — where babies are welcome amid the sex toys and the motto is “Classy, tasteful and comfortable” — no one had heard of it.

At the Allami smoke shop across the street, adjacent to a hypnosis center that can help you stop smoking, they were disturbed by it. Down the road at Quiznos, the young man making subs went on a rant about his insular community’s compliance with the government’s intrusions into Americans’ private lives.

Indeed, this valley of subdivisions, sagebrush and one of the remaining polygamous sects gets more exercised about the letter “c” — there’s a Kapuccino cafe, a Maverik convenience store and a Pikasso print shop — than they do about the National Security Agency’s secretive new $2 billion, one- million-square-foot data death star.

As Mark Reid, Bluffdale’s city manager, told The Times’s Michael Schmidt, the community’s initial excitement about new jobs faded because many of the data analysts are elsewhere. The good jobs, he says, are for security dogs who have a “plush” kennel.

“They don’t interact with anybody, they don’t let anybody come up there,” he said: “It is like they are not there. It is not like they are I.B.M. and they join us for town days and sponsor a booth.”

At a hearing of the Senate Intelligence Committee in Washington on Thursday, Democratic Senator Mark Udall of Colorado tried to pin down the shadowy and largely unchecked Emperor Alexander, as the N.S.A. head, Gen. Keith Alexander, is known, on whether his agency is indiscriminately Hoovering Americans’ phone records.

“I believe it is in the nation’s best interest to put all the phone records into a lockbox that we could search when the nation needs to do it, yes,” Alexander said.

When Alexander was asked a year ago if the Bluffdale center would hold the data of Americans, he replied no: “We don’t hold data on U.S. citizens,” adding that reports that they would “grab all the e-mails” were “grossly misreported.”

Democratic Senator Ron Wyden of Oregon told me ruefully that on Thursday, “Alexander put in a lockbox information that he’s told the public he doesn’t have. This is what we’re dealing with.

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