I run Adsense on a few sites and my visitors are complaining about "Amazon popups" via mobile device. I took a look and I'm also getting a lot of these ads - which are called forced redirects. This really hasn't been an issue for me or my viewers until recently. A few of the URLs users are being redirected to are:
samsung-2018-win.club
samsung-prize-giveaway.today
samsung-win-2018.club
walmartwin2018.club
They always bring you to a new page, in the same tab/window - and you can't use the browser back button to go back.
And they always start off with a loud "Congratulations"... Does anyone have any input on how to defeat this?