Virus on Imac. Can't use internet browser. Pls help.
Hi this is not my problem but a friend has got a virus on his computer and he can't use his internet browser so im asking for help for him, I have no clue about macs. But he went to download something and I guess he has no internet protection against viruses. He sent me this image of what it looks like, this happens when he opens his internet browser. When he clicks 'ok' the message constantly pops us and won't go away, he sent me a video but I can't attach it for some reason it constantly says 'security alert and to call the number for support' but I know it's just a scam. Can someone please help, as I don't use mac, I only know how to remove viruses on Windows.