Possible New Mac Virus?
This is really for my brother. He received a Mac Install message, and clicked on the install button on the screen, and now his Mac is in a suspended state. This was obviously not an update from Apple, but it sounds like some kind of scam. Does anyone know if this is a new type of Mac virus? I believe that his operating sytem is macOS Sierra.
iMac, OS X Mavericks (10.9.1), So far everything else seems OK.