According to FBI contracting documents, the FBI has hired Dataminr to monitor in real-time more than 500 million daily tweets. EPIC has warned that these techniques of mass surveillance will subject more innocent people to government investigation. In 2012, EPIC successfully obtained documents detailing the social media monitoring program of the Department of Homeland Security, including instructions to analysts to monitor critics of the agency. EPIC's FOIA work led to a Congressional hearing on social media monitoring and government surveillance.
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by Ryan Calo, A. Michael Froomkin,