My parents computer. My father was looking up something on fixing one of the truck and this popped up. Mouse started moving all over the screen on its own at the same time.
If I click on the OK of the white box, it disappears for a second, revealing a Google Chrome error message box below. The second mouse cursor also moves on its own then. Only did that once.
Called the phone number out of curiosity and got a menu with just 1 option. Hung up then.
I suspect some form of Windows Defender virus but my Google-fu is failing me in a definitive answer. I have the free version of AVG running now to hopefully identify something.
Edited by Ravenbar, 17 March 2017 - 06:29 PM.