At least three foreign ministers, a U.S. governor and a member of Congress all received outreach from the fake Rubio, according to a State Department cable.

The department takes seriously its responsibility to safeguard its information and continuously takes steps to improve the department’s cybersecurity posture to prevent future incidents.”It declined to comment further due to “security reasons” and the ongoing investigation.

The incident, first reported by The Washington Post, has prompted the State Department to alert all diplomatic and consular posts globally. Officials were advised to warn external partners about potential impersonation attempts.