Conti ransomware, the successor of the notorious Ryuk, has released a data leak site as part of their extortion strategy to force victims into paying a ransom. Conti is a relatively new private Ransomware-as-a-Service (RaaS) that has recruited experienced hackers to distribute the ransomware in exchange for a large share of the ransom payment. Since July 2020, Ryuk is no longer being deployed, and in its place, the TrickBot-linked operators, are now deploying Conti.
Source: https://www.bleepingcomputer.com/news/security/ryuk-successor-conti-ransomware-releases-data-leak-site/