Elon Musk says Twitter accounts engaging in impersonation without clearly specifying they are a parody will be permanently suspended.
Twitter previously issued a warning before suspending accounts, but there would now be no warning, he announced.
A number of accounts that changed their name to Elon Musk and mocked the billionaire have already been suspended or placed behind a warning sign.
Twitter’s billionaire new owner took over the company late last month.
At the end of last week he laid off around half of the company’s workforce.