Grubman Shire Meiselas & Sacks, a law firm that represents a number of celebrities, has been hacked, and the company must pay up if they want to protect their clients’ privacy. The firm’s website has been down ever since hackers infiltrated their systems, claiming to have obtained 756 GB of data. This sensitive information includes work contracts, confidential settlements, endorsement deals, and e-mails involving their famous clients, and the hackers are threatening to publicize tons of “personal details” unless the firm coughs up $21 million.

Charley Gallay/Getty Images for Sony

“We can confirm that we’ve been victimized by a cyberattack,” a rep for the firm said in a statement. “We have notified our clients and our staff. We have hired the world’s experts who specialize in this area, and we are working around the clock to address these matters.” The firm has represented a number of famous folks both in the past and present, including (but not limited to) Drake, , The Weeknd, LeBron James, , , Elton John, , Mike Tyson, , Robert De Niro, Bruce Springsteen, Spike Lee, , U2, Barbra Streisand, and Priyanka Chopra. According to The Daily Beast, the firm has also represented companies such as HBO, EMI Music Group, MTV, Playboy Enterprises, Spotify, and more.

Kevin Winter/Getty Images

The FBI has opened an investigation, according to multiple sources. It is believed that the hackers go by REvil or Sodinokibi, known for having hit foreign exchange company Travelex back in January.