I don't know what the scam actually is ... but I can make a shrewd guess.
It doesn't matter.
What happens is that you get a phone call. In my case (and another I
know about) it was from someone who (how can I put this) 'has an Asian
They will tell you that they have been monitoring your Windows computer
and that it is 'slow to boot up' and has 'problems with WebSite Pages'
... or other similar baloney.
When I told him I ran Linux (I don't normally, but I can ... when I
choose) ... he immediately hung up.
So be warned ... don't give your name, don't give any details, and (if
you want to get rid of the caller) say you run Linux.
(Interestingly, he didn't argue with me ... which - if he had actually
known anything he claimed to know - he could have done ... or at least,
tried. He wouldn't have got very far, but he didn't know that, and he
didn't even try).