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New Details of XKeyscore Revealed: NSA’s Google for the World’s Private Communications

Published: July 1, 2015
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Source: The Intercept

In addition to other sources of digital information, the XKEYSCORE program is fed a constant flow of Internet traffic from fiber optic cables that make up the backbone of the world’s communication network. (Illustrations byBlue Delliquanti and David Axe for The Intercept)

One of the National Security Agency’s most powerful tools of mass surveillance makes tracking someone’s Internet usage as easy as entering an email address, and provides no built-in technology to prevent abuse. Today, The Intercept is publishing 48 top-secret and other classified documents about XKEYSCORE dated up to 2013, which shed new light on the breadth, depth and functionality of this critical spy system — one of the largest releases yet of documents provided by NSA whistleblower Edward Snowden.

The NSA’s XKEYSCORE program, first revealed by The Guardian, sweeps up countless people’s Internet searches, emails, documents, usernames and passwords, and other private communications. XKEYSCORE is fed a constant flow of Internet traffic from fiber optic cables that make up the backbone of the world’s communication network, among other sources, for processing. As of 2008, the surveillance system boasted approximately 150 field sites in the United States, Mexico, Brazil, United Kingdom, Spain, Russia, Nigeria, Somalia, Pakistan, Japan, Australia, as well as many other countries, consisting of over 700 servers.

These servers store “full-take data” at the collection sites — meaning that they captured all of the traffic collected — and, as of 2009, stored content for 3 to 5 days and metadata for 30 to 45 days. NSA documents indicate that tens of billions of records are stored in its database. “It is a fully distributed processing and query system that runs on machines around the world,” an NSA briefing on XKEYSCORE says. “At field sites, XKEYSCORE can run on multiple computers that gives it the ability to scale in both processing power and storage.”

XKEYSCORE also collects and processes Internet traffic from Americans, though NSA analysts are taught to avoid querying the system in ways that might result in spying on U.S. data. Experts and privacy activists, however, have long doubted that such exclusions are effective in preventing large amounts of American data from being swept up. One document The Intercept is publishing today suggests that FISA warrants have authorized “full-take” collection of traffic from at least some U.S. web forums.

Read the full article at The Intercept.

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