A law firm used by A-list stars including Rod Stewart, Lil Nas X and Robert De Niro has been hacked.
The website for Grubman Shire Meiselas & Sacks is down and hackers claim to have 756 gigabytes of data including contracts and personal emails.
A screenshot allegedly of a Madonna contract has been released, and the criminals are demanding payment.
The New York law firm says it has notified its clients and is working with cyber-security experts.
It’s not known what sum the hackers are demanding and whether the law firm is negotiating with them.
The law firm said in a press statement: “We can confirm that we’ve been victimised by a cyber-attack. We have notified our clients and our staff. We have hired the world’s experts who specialise in this area, and we are working around the clock to address these matters.”
