Christopher Doman, Co-Founder and CTO at Cado Security, is talking about their research on "Cerber Ransomware: Dissecting the three heads." This research delves into Cerber ransomware being deployed onto servers running the Confluence application via the CVE-2023-22518 exploit. 
The research states "Cerber emerged and was at the peak of its activity around 2016, and has since only occasional campaigns, most recently targeting the aforementioned Confluence vulnerability."
The research can be found here:
Cerber Ransomware: Dissecting the three heads