Most popular website are tracking your mouse movements and clicks on their website. It's called a user heatmap and it's meant to be used to see what users are actually clicking on when they drop into your website i.e. everyone highlighted this word on you copy or stopped scrolling after this section that sort of thing.
It's been happening for many years. If you don't want to give websites this data block javascript in your browser by default.
Most popular website are tracking your mouse movements and clicks on their website. It's called a user heatmap and it's meant to be used to see what users are actually clicking on when they drop into your website i.e. everyone highlighted this word on you copy or stopped scrolling after this section that sort of thing.
It's been happening for many years. If you don't want to give websites this data block javascript in your browser by default.