People who just want their PC to 'do useful things' aren't using Ubuntu.
I use Ubuntu for most of my machines, and I'm quite curious about X11 forwarding.
The best thing to do is move your relatives to using Ubuntu, on which none of these malware runs.
Following its release, version 2.0 was the first version to use Ubuntu as its codebase.
In 2013, it was announced that a new Linux-based operating system with the same name would be released using Ubuntu.
I've spent the last two years using Ubuntu, and I find it relatively easy.
I use Win7 and Ubuntu at home, not a huge amount between them but Win7 just shades it in usability.
I use Ubuntu as my daily driver.
I would love to use Ubuntu if they were more community contributors and less users.
Have you ever used Ubuntu?