The new scam involves criminals using AI to pose as senior U.S. officials in a bid to get personal information from victims.

The FBI is warning people to be vigilant of an ongoing malicious messaging campaign that uses AI-generated voice audio to impersonate government officials in an attempt to trick recipients into clicking on links that can infect their computers.

Investigators worry that every hijacked mailbox will feed the next round. One captured address book can seed hundreds more of texts and voice notes, each one wearing a well-known signature. Public notice, the bureau says, is the quickest way to break that chain.