“Adobe Flash Player is out of date” popup appear in my Mac, and I accedently installed the fake Adobe Flash Player, now popups showing everywhere. How to stop it?
After a long search on the Internet I just found this article, it may help you.
https://www.securemacos.com/single-post/2017/05/17/Remove-update-flash-player-virus-pop-ups-from-Apple-Mac-OSX-macOS