The operators behind the Sodinokibi Ransomware have released files stolen from one of their victims because a ransom was not paid in time. They claim this data belongs to Artech Information Systems, who describe themselves as a “minority- and women-owned diversity supplier and one of the largest IT staffing companies in the U.S. The company’s site is down and it is not known if it is due to this attack. Expect to see more ransomware operators utilize this practice as it becomes the norm in attacks.”
Source: https://www.bleepingcomputer.com/news/security/sodinokibi-ransomware-publishes-stolen-data-for-the-first-time/