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Finally done with the distro-hop: My return to Fedora
(unknownuniverse.uk)
From Wikipedia, the free encyclopedia
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.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Linux in general is not secure for desktop users. There's basically never sandboxing, and when there is it's usually weak, antivirus is rarely used, and developers aren't vetted as stringently as with paid software. Apparently Fedora and OpenSUSE take these issues more seriously, and SE Linux does somewhat restrict what malicious things a piece of software can do.
It's a pretty widely held view that Fedora and OpenSUSE are more secure than Debian, Ubuntu, and Arch for desktop users but I'm not really an expert so I'm mostly retroactively justifying what I've heard second-hand.