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Arch Linux Now Believes Malware Incident Under Control: More Than 1,500 Affected Packages
(www.phoronix.com)
This is a most excellent place for technology news and articles.
To use the AUR, you have to install a AUR Helper https://wiki.archlinux.org/title/AUR_helpers
They are not just "click and go". They require a dedicated effort. AND when you're done, using them requires a specific command. So in short, it's not pacman and it's not Arch, the AUR is a special choice