REvil, Conti & 36 more ransomware groups targeting healthcare organizations 

Nearly 40 ransomware operators have attacked hospitals, health systems and other providers since January 2020, according to a recent analysis from the CyberPeace Institute. 

For the report, CyberPeace mapped ransomware attacks against healthcare providers across 27 countries between Jan. 6, 2020, and Nov. 15, 2021. The CyberPeace Institute is an independent, nongovernmental organization focused on cybersecurity research and initiatives. 

Here are the names of the groups, listed by the numbers of ransomware attacks they have orchestrated on one or more healthcare organizations over the past 18 months. 

More than 15 attacks on healthcare: 

1. Conti

2. Pysa

Between five and 14 attacks on healthcare: 

3. REvil 

4. Maze 

5. Ryuk 

6. Netwalker 

7. Hive 

8. LockBit 

9. DoppelPaymer 

10. Avaddon 

11. Babuk 

12. Vice Society 

Under five attacks on healthcare: 

13. BlackMatter 

14. Prometheus 

15. Groove 

16. Clop 

17. Nefilim

18. SunCrypt 

19. AtomSilo 

20. Egregor 

21. Ragnar Locker 

22. BlackByte 

23. Cuba 

24. Ragnarok 

25. Haron 

26. Mount Locker 

27. Everest 

28. AvosLocker 

29. Astro Team 

30. Grief 

31. CoomingProject 

32. Lorenz 

33. N3tw0rm 

34. LV 

35. Spook 

36. Xing Locker 

37. Macaw 

38. Phobos

 

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