Sony subsidiary Insomniac Games is sending data breach notification letters to employees whose personal information was stolen and leaked online following a Rhysida ransomware attack in November.

After negotiations failed when the game studio refused to pay the $2 million ransom, Rhysida dumped 1,67 TB of documents on its dark web leak site.

"We are aware that the stolen data includes personal information belonging to our employees, former employees, and independent contractors."