Twitter Bars Intelligence Agencies From Using Analytics Service

The Wall Street Journal (online registration required): witter Inc. cut off U.S. intelligence agencies from access to a service that sifts through the entire output of its social-media postings, the latest example of tension between Silicon Valley and the federal government over terrorism and privacy.

The move, which hasn’t been publicly announced, was confirmed by a senior U.S. intelligence official and other people familiar with the matter. The service—which sends out alerts of unfolding terror attacks, political unrest and other potentially important events—isn’t...

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