Impostor uses AI voice of Marco Rubio on Signal

Confirmed

State Department cable (quoted by CBS) says AI-generated text and voice messages were used.

A Signal account named like Rubio left AI voice messages for officials. The cable linked it to a May 2025 FBI-investigated impersonation.

“likely aimed to manipulate targeted individuals using AI-generated text and voice messages, with the goal of gaining access to information or accounts”CBS News

Sources

"Unknown actor" using AI to impersonate Rubio, State Department cable showsCBS News · 8 Jul 2025 · secondary source
Impostor uses AI to impersonate RubioNPR · 9 Jul 2025 · secondary source

Date: Jun 2025
Disclosed: 8 Jul 2025
Actor: unknown (unknown), as attributed by CBS News
Targets: Three foreign ministers, a US governor, a member of Congress
What the AI did: Deepfake, Social engineering
Model: unspecified voice-clone/deepfake tool
Model family: Deepfake / voice
Model basis: stated by victim
Autonomy: assist
Outcome: At least five non-Department individuals contacted; State Dept said no direct cyber threat to its systems.