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Online, Terror Threats Are a 'Needle in 1,000 Haystacks'

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The FBI and other agencies keep an eye on thousands of extremist websites, on which tens of thousands of individuals are communicating, sending millions of messages between them. Difficult as it sounds, monitoring such networks is crucial to predicting and preventing attacks similar to Boston.
image Online, Terror Threats Are a 'Needle in 1,000 Haystacks' Online, Terror Threats Are a 'Needle in 1,000 Haystacks' Online, Terror Threats Are a 'Needle in 1,000 Haystacks' Online, Terror Threats Are a 'Needle in 1,000 Haystacks'

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