> The monitoring seems at odds with claims from both Twitter and Dataminr that neither company would engage in or facilitate domestic surveillance following a string of 2016 controversies. Twitter, up until recently a longtime investor in Dataminr alongside the CIA, provides the company with full access to a content stream known as the “firehose” — a rare privilege among tech firms and one that lets Dataminr, recently valued at over $1.8 billion, scan every public tweet as soon as its author hits send. Both companies denied that the protest monitoring meets the definition of surveillance.