@optimuspnj It depends on what you're doing. Focus on patching, firewall, and using sudo, etc. I've never heard of a widespread attack that would have been mitigated by AV.
This isn't to say it's impossible, but the most critical Linux issues tend to be caused by unpatched vulnerabilities in network software rather than users downloading and installing malware. You're probably going to get more value from a regular patch schedule and turning off unnecessary services than from installing AV.
@gabriel Thank you!
@optimuspnj Depends on what the system is being used for. If you're using it as a personal system, probably not. I have in the past installed AV on a Linux system that was being used as a Windows file repo. Most of the people putting files there were Windows users, so I added AV to scan the files placed there by the users.
@mike Thank you!
@optimuspnj Make sure you monitor for any PEBCAK errors and you should be good. PEBCAK being problems caused by you, the user. Linux based systems don't have a whole lot of vulnerabilities, thanks to quick fixes. Make sure to regularly update to get those fixes, though.
If you are mindful of your system's permissions and keep everything tip-top at the latest stable version ClamAV (a FOSS antivirus) is plenty, and maybe even unnecessary.
@skunksarebetter Thank you!
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