OS 10.12.6

A couple of times in the past, I had a message flash up on my screen saying my computer has been hacked/controlled and I should phone the number shown on my screen.

In both cases I just cut off the power which solved the problem. I have just read an article by Jason Snell who recommends downloading TeamViewer...it's free.

Should I download this app? This particular problem occurs with safari only from what I can gather. I do have Firefox and chrome in my dock.

jaybass


OS 13.6.4 iMac (Retina 5K, 27", 2017, 3.4 GHz Intel Core i5, 24 GB RAM, 2400 MHz DDR4. SuperDuper. 1 TB Lacie HD