The star at the centre of the celebrity threesome injunction is now reportedly trying to stop his name from circulating on social media, even in countries not covered by the gagging order.
The celebrity, known only as PJS, is said to be using online sleuths to track down tweets naming him and his spouse, who the court has ruled can only be identified as YMA.
The MailOnline reports that those identified as naming the couple in relation to the injunction have been sent a threatening email by Twitter.
Users have been warned they must "voluntarily" delete any message that could break the injunction, but some have claimed they have simply commented on facts relating to the case, not on the identities of those involved.
The message from Twitter reads: "The complainant requests that the following tweet, allegedly in violation of local law in the UK, be removed immediately from your account.
"Please confirm whether you will voluntarily comply with the request."
Thousands of Twitter users are said to have received the warning, sent after the Supreme Court on Thursday ruled that the couples' names should remain secret.
That decision followed a Court of Appeal ruling in April that found the injunction should be lifted as the couples' identities had already been widely circulated on the internet.
One Briton living in Spain told MailOnline he had been contacted overnight - even though anyone outside England and Wales is not bound by the injunction.
Users of Twitter and Facebook could face legal action for contempt of court if they use social media to name him.
The celebrity couple earlier asked Google in the UK to remove any links to stories that name PJS.
Several publications around the world, including an Australian news website, a Scottish newspaper and a UK political blog, have named the pair.