Hi Peter

Thanks for that,

If you or anyone else wants to test what I have been writing about ,do the following.

 - Install Linux Mint 19 with default settings on your modern computer.

- Use firefox to visit the following website - https://www.idnes.cz/           (It's in google), and click a few of the links.Spend about 30 minutes on there.I know I wrote hacking occurs in a few minutes but lets give them a very good chance.

- Repeat a few times.

- Then check if the next software update works.

 - If there are no symptoms of hacking then I'll consider myself totally wrong.

Thanks and good luck.

regards Peter

It may also be worth installing the "noscript" addon into
Firefox. It makes websites a bit more fiddly to work with,
but can keep a lot of the bad stuff at arms length.

You get to choose what "features" <cough!> of the plethora
of analytics, tracking and other addware site and affiliates
that infest the majority of websites are alowed to run.

Unfortunately if the site makes use of javascript, popups
and popunders can still be launched.

(Just because I'm paranoid, it doesn't mean they are not
out to get me!)

Regards,

Morrie.