this post was submitted on 31 Mar 2024
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Linux
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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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Anti-viruses are a scam and always have been. They aren't much more than security theater and box ticking. Don't get into the mindset that you can outsourse security to a single product. Security is something that happens in depth. The more intrusive av software can itself become an attack vector as it often runs with lots of privileges.
Distros operate with webs of trust and cryptographically signed packages. Your distro installer verifies the integrity of the package. There is no need to check a third party signature database. It adds no value. Even well audited software could contain hidden vulnerabilities so increasingly we are running software with less capabilities via systemd, flatpak/brwrap or in containers. The environment is very different to the origins of av software on Window 9x where people would download random unsigned executables to a system with no privilege restrictions.
There are lots of challenge for the FOSS community. We love features and freedoms and those features and freedoms sometimes make security more complicated. We need to show more restraint packaging software like ssh and not add so many patches and additional dependencies. We also need to show more restraint in the typical rust, go or javascript project where adding dependencies is so easy we end up sometimes including hundreds of them for stupid crap like coloured messages or being able to handle a dozen config file formats. I don't care about your garbage collection or advanced compile time checks, if you include hundreds of crates from other developers you are no better than npm and I would put more faith in a 20 year old c library.
And more, it's known that av can increase sloppy behavior regarding security in people that does not know about security, making them feel safe and, therefore, clicking anywhere and installing anything
Av does increase the risk of being infected for most people
The way this xz backdoor was treated is good enough!
Always with good version control and cryptographic keys to sign the packages
Antivirus software is really useful if you're running a lot of workstations and/or severs and you can't trust the users. It is just another layer of security.
For a single Linux user, there's really no need for one.