From MSN:
An impostor pretending to be Secretary of State Marco Rubio contacted foreign ministers, a U.S. governor and a member of Congress by sending them voice and text messages that mimic Rubio’s voice and writing style using artificial intelligence-powered software, according to a senior U.S. official and a State Department cable obtained by The Washington Post.
U.S. authorities do not know who is behind the string of impersonation attempts but they believe the culprit is likely attempting to manipulate powerful government officials “with the goal of gaining access to information or accounts,” according to a cable sent by Rubio’s office to State Department employees.