Impostor uses AI to impersonate Rubio and contact foreign and US
officials
[July 09, 2025]
By MATTHEW LEE
WASHINGTON (AP) — The State Department is warning U.S. diplomats of
attempts to impersonate Secretary of State Marco Rubio and possibly
other officials using technology driven by artificial intelligence,
according to two senior officials and a cable sent last week to all
embassies and consulates.
The warning came after the department discovered that an impostor posing
as Rubio had attempted to reach out to at least three foreign ministers,
a U.S. senator and a governor, according to the July 3 cable, which was
first reported by The Washington Post.
The recipients of the scam messages, which were sent by text, Signal and
voice mail, were not identified in the cable, a copy of which was shared
with The Associated Press.
“The State Department is aware of this incident and is currently
monitoring and addressing the matter," department spokeswoman Tammy
Bruce told reporters. “The department takes seriously its responsibility
to safeguard its information and continuously take steps to improve the
department’s cybersecurity posture to prevent future incidents.”
She declined to comment further due to “security reasons” and the
ongoing investigation.
It’s the latest instance of a high-level Trump administration figure
targeted by an impersonator, with a similar incident revealed in May
involving President Donald Trump’s chief of staff, Susie Wiles. The
misuse of AI to deceive people is likely to grow as the technology
improves and becomes more widely available, and the FBI warned this past
spring about “malicious actors” impersonating senior U.S. government
officials in a text and voice messaging campaign.
The hoaxes involving Rubio had been unsuccessful and “not very
sophisticated,” one of the officials said. Nonetheless, the second
official said the department deemed it “prudent” to advise all employees
and foreign governments, particularly as efforts by foreign actors to
compromise information security increase.
The officials were not authorized to discuss the matter publicly and
spoke on condition of anonymity.
“There is no direct cyber threat to the department from this campaign,
but information shared with a third party could be exposed if targeted
individuals are compromised,” the cable said.
The FBI has warned in a public service announcement about a “malicious”
campaign relying on text messages and AI-generated voice messages that
purport to come from a senior U.S. official and that aim to dupe other
government officials as well as the victim’s associates and contacts.
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Secretary of State Marco Rubio attends a signing ceremony for a
peace agreement between Rwanda and the Democratic Republic of the
Congo at the State Department, June 27, 2025, in Washington. (AP
Photo/Mark Schiefelbein, File)
This is not the first time that Rubio has been impersonated in a
deepfake. This spring, someone created a bogus video of him saying
he wanted to cut off Ukraine’s access to Elon Musk’s Starlink
internet service. Ukraine’s government later rebutted the false
claim.
Several potential solutions have been put forward in recent years to
the growing misuse of AI for deception, including criminal penalties
and improved media literacy. Concerns about deepfakes have also led
to a flood of new apps and AI systems designed to spot phonies that
could easily fool a human.
The tech companies working on these systems are now in competition
against those who would use AI to deceive, according to Siwei Lyu, a
professor and computer scientist at the University at Buffalo. He
said he’s seen an increase in the number of deepfakes portraying
celebrities, politicians and business leaders as the technology
improves.
Just a few years ago, fakes contained easy-to-spot flaws — inhuman
voices or mistakes like extra fingers — but now the AI is so good,
it’s much harder for a human to spot, giving deepfake makers an
advantage.
“The level of realism and quality is increasing,” Lyu said. “It’s an
arms race, and right now the generators are getting the upper hand.”
The Rubio hoax comes after text messages and phone calls went to
elected officials, business executives and other prominent figures
from someone who seemed to have gained access to the contacts in
Wiles’ personal cellphone, The Wall Street Journal reported in May.
Some of those who received calls heard a voice that sounded like
Wiles, which may have been generated by AI, according to the
newspaper. The messages and calls were not coming from Wiles’
number, the report said. The government was investigating.
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AP writers David Klepper and Eric Tucker contributed to this report.
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