President-elect Donald Trump has picked former New York City Mayor Rudy Giuliani to form a team of private sector cybersecurity experts.
Mr Giuliani, once a leading contender for secretary of state, said Mr Trump would meet the team on a regular basis.
He was selected because of his private sector cybersecurity expertise, a Trump transition team statement said.
Mr Trump has said he plans to create a cybersecurity team within his first 90 days in office.
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Mr Giuliani’s appointment follows Russian hackers’ apparent attempt to meddle in November’s US election.
Mr Trump accepted for the first time at a press conference on Wednesday that the Russians were behind the cyber-breach.
Thursday’s announcement from the president-elect called cyber-intrusion “the fastest growing crime in the United States and much of the world” and said it was a “major threat” to national security.
But it stopped short of giving a formal title to Mr Giuliani, 72, who runs an international security consulting firm.
A vocal Trump supporter during the campaign, he last month said he was taking himself out of the running for a cabinet job after his business dealings came under media scrutiny.
Mr Giuliani had said the role of America’s top diplomat “was the only one I had any real interest in”.
But Mr Trump picked former Exxon Mobil chief executive Rex Tillerson for that position.