Users have reported to have received a red warning screen on their Google Chrome Browser which then locked the screen. A ‘free phone’ number is given. DO NOT ring the number as it will put you in touch with the scammers who will try to get money from you to solve the problem.
The solution is simply to restart your computer. If you are worried your computer has been infected you can download a free software program called “Malwarebytes” which will check if your computer has any infected code and remove it.