The US State Department said it is investigating an imposter who used artificial intelligence to impersonate Secretary of State Marco Rubio and contact three foreign ministers.The "unknown actor" is alleged to have used an artificially-generated voice of Rubio to contact officials via the Signal messaging app,

The State Department is sounding the alarm to high-level government officials and foreign ministers after an individual or group of people utilized artificial intelligence to impersonate the voice of Secretary of State Marco Rubio to send messages to at least five government officials in mid-June.