Installing Chromium Browser in Zorin

The security risks @Storm is referring to are not related to Chromium, but to running scripts from unknown or untrusted sources. This advice applies to any operating system, not just Linux.
I've looked at the Chromium page and it seems that it redirects to that repository you shared, which is baffling since it's been 9 years without any modifications... I wouldn't use that, personally.

There are a few options you can choose from to install Chromium browser:

  1. Through the Software Store, search for "chromium browser" and install that. It will be installed as a so-called Flatpak package, which has it's own pros and cons, but it's the easiest way to go.

  2. Add an external repository source and install the native Debian package version from there. The reason you'd have to go this route is because the default repositories include a rather old build of Chromium (Version 81, while current is 132).

    In a terminal, run:

    sudo add-apt-repository ppa:xtradeb/apps
    sudo apt update
    sudo apt install chromium
    

    Note that by doing this you are trusting a third party that provides this package, so the same advice as before applies. In this case, I've looked at a and seems pretty popular, which is always a good sign. You can learn more about them here:

    About – XtraDeb

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