I run Firefox sandboxed on a Win10 laptop.
Since Sunday I've noticed that if I hover my mouse over, or left-click, a link to a YT video, I get a pop-up notification that "WerFault.exe can't communicate with Sandboxie".
This only occurs with YT videos;. No problem with other videos.
A bit of Googling indicates that WerFault.exe is a coin-mining virus. !
Anyone else here had a malware warning?

 

I run Process Hacker in my desktop. It makes it a lot easier to search and spot specific services and put an end to them.