BitPyLock was first discovered by MalwareHunterTeam on January 9th, 2020 and has since seen a trickle of new victims daily. Ransomware has gone from targeting individual workstations to trying to compromise networks and stealing files before encrypting devices. In a more recent version, the actors have changed their targeting to focus on network compromise and the claims of stealing data. The ransom note further states that they will release stolen data if a ransom payment is not made. The latest version of the ransomware has not yet released stolen files belonging to non-paying victims.
Source: https://www.bleepingcomputer.com/news/security/bitpylock-ransomware-now-threatens-to-publish-stolen-data/