The website Ars Technica has a good article about something that we at PMUG have been noticing.
Lately there have been a lot of questions from users who had unwittingly stumbled upon websites that popped up fake alerts urging them to call a phone number to receive support. It’s a scam that has been going on for years against Windows users, and it’s a shame to see that Apple’s growing popularity has attracted the attention of these bottom feeders. Please keep on the lookout for malarkey like this.
If you encounter this situation, just quit Safari (or Chrome, Firefox, Operar, or whatever web browser you use) and restart it.
If you can’t quit your web browser normally, go to the Apple menu () in the upper left corner of your Mac’s screen and choose “Force Quit…” to bring up a dialog box that will allow you to force your web browser to quit. You should then be able to restart your browser and go about your business.