I don't know anyone uses Linux needs malware protection or whatever protection
Nearly all diehard crypto users run Linux and many have been compromised and robbed with malware delivered by apps and browser plugins.
They are always so sure they did everything possible for max security and then they still get robbed because they trusted an app or a site.
Many companies running Linux and had their systems locked down with ransomware. It wasn’t just a Windows server problem.
Security on every platform is always one or two steps behind attackers.
Must always remember, “open source” doesn’t automatically mean safe unless you read and compile the source yourself.