WASHINGTON — When American analysts hunting terrorists sought new ways to comb through the troves of phone records, e-mails and other data piling up as digital communications exploded over the past decade, they turned to Silicon Valley computer experts who had developed complex equations to thwart Russian mobsters intent on credit card fraud.
The partnership between the intelligence community and Palantir Technologies, a Palo Alto, Calif., company founded by a group of inventors from PayPal, is just one of many that the National Security Agency and other agencies have forged as they have rushed to unlock the secrets of “Big Data.”
Today, a revolution in software technology that allows for the highly automated and instantaneous analysis of enormous volumes of digital information has transformed the N.S.A., turning it into the virtual landlord of the digital assets of Americans and foreigners alike. The new technology has, for the first time, given America’s spies the ability to track the activities and movements of people almost anywhere in the world without actually watching them or listening to their conversations.
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