A messaging app called Signal based in San Francisco was used by the Trump administration to discuss war plans.

Signal Centers has added two new leadership roles to its ranks. Heather Hicks has been promoted to executive director of statewide services, and Christa J. Mannarino is moving into the role of ...

(Bloomberg) -- The messaging app Signal that Trump administration officials used to discuss an attack on Yemen’s Houthi rebels was created by a one-time anarchist to help activists, journalists and ...