this post was submitted on 06 Aug 2023
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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You should protect against it, but antiviruses are not the answer. It's more efficient to prevent breaches by building good security into software by design (and keeping your system up to date) than to play an endless game of catch-up enumerating pieces of malware after they're already circulating.
Windows tried this approach and it turned into a mess, antivirus companies turned into villains themselves and it still didn't fix the underlying problems. Eventually they came around to actually fixing security problems, and keeping Windows up to date, and offering a curated source of apps and so on.
You can still use scanning on Linux, but apply it efficiently on entry points, like attachments in your email client or your Downloads dir. Don't run a scanner all the time on all your processes and files, that's a gross waste of resources.
It also makes no sense for a properly secured modern system. Take for example Android, where a userspace antivirus can't work because userspace processes are isolated from each other, and a system level antivirus cannot be trusted because it needs to download signatures externally and can (and probably will) be a breach of privacy.
I basically agree with all the points you are making. Only scan downloads, email attachments and whatnot. Don't try to play cat and mouse with sophisticated malware because that's a waste of resources. I don't think software like this exists?
Perhaps SELinux on desktop is the way to go as other posts are suggesting, although I heard that it has some usability problems and can break some programs.