ESET, a global leader in cybersecurity, has announced its latest discovery of 12 previously undetected Linux malware families based on OpenSSH, documented in their latest research paper “The Dark Side of the ForSSHe”. These powerful tools give attackers full control over Linux server’s operations and are widely used both by crimeware and APT groups. OpenSSH is the most common tool for system administrators to manage virtual, cloud or dedicated rented Linux servers and, as 37 percent of public-facing internet servers run Linux, OpenSSH is often a point of attack by threat actors aiming at fully controlling the targeted servers.

https://www.eset.com/us/about/newsroom/press-releases/eset-discovers-12-previously-undetected-linux-backdoors-1/