Researchers at ESET have discovered Bootkitty, the world's first unkillable UEFI bootkit for Linux.
Bootkitty was uploaded to VirusTotal and appears to be a proof-of-concept bootkit, lacking the capability to infect all Linux distributions other than Ubuntu.
No evidence of actual infections in the wild has been found so far.
The discovery suggests that threat actors may be actively developing a Linux version of an unkillable bootkit, similar to those found in Windows machines.