"The use of social media platforms, like Twitter, by terrorist groups, intelligence services, and criminal organizations to further their illegal activity creates a demonstrated need for tools to properly identify the activity and react appropriately. With increased use of Twitter by subjects of FBI investigations, it is critical to obtain a service which will allow the FBI to identify relevant information from Twitter in a timely fashion," an FBI contracting document said.
In May, Twitter reportedly banned CIA access to Dataminr, stressing that it would never authorize "Dataminr or any third party to sell data to a government or intelligence agency for surveillance purposes."
Dataminr was founded in 2009 with a mission to search for newsworthy events through real-time tweets.