Ransomware groups are fluid. They morph, mutate, merge, fade away, and a few are resurrected. The list of the most feared groups varies from expert to expert, but some names make it to practically every list.

Check out the list of the top 6 most feared RaaS (Ransomware-as-a-Service) groups and learn how to take effective measures to guard against the evolving threat of ransomware.