I just got a "warning system may have found viruses on your computer" message on safari

Fraudulent spam. Not only is it impossible to diagnose your computer's health, virus status, etc, by visiting a web page, Macs don't get viruses of that kind. Calling that number would have prompted the perpetrator to take your money and/or gain remote access to your computer.

Quit Safari completely by holding down your cursor on the dock icon and choosing Quit when you see it appear, or hitting cmd-Q when the Safari menu is visible on the top left of the screen. Once it has completely quit (there is no light under the dock icon), hold down the Shift key on the keyboard, and launch Safari again.

Safari will normally try to reload whatever webpages were open when it last quit; holding Shift will cancel this behaviour. And try to avoid going back to whatever webpage you were on when you got the popup.

Matt

Worked for me as well! Thanks!

that worked for me, too! Thank you so much!

I got that too ( got that message many times ) there is one thing that points out its not legit ... WINDOWS LOGO in left corner usually :-) Other thing i wonder is that you can get this pop up virus warning on chrome google main page ... cant google system figure out its bogus message ?

Awesome solution! Well written so was easy to understand and perform. Thanks!

Thanks so much. Worked perfectly! [for a leernoos spam pop up].

I had the same problem, thanks! I have a question. I got the popup while navigating from my church's website. I know that they aren't in the interest of spamming visitors. Was this a problem with my computer or does their HTML code have a virus or something?

This isn't working for me. I have followed the steps to shut down Safari, erase saved history, and open without re-opening previous webpages. However, if this is coming from a specific webpage, it must be one that I visit regularly, like Gmail, Pandora or Facebook. Which blows! I can't avoid those pages forever. Help!

Disconnect from the Internet and then try all the steps you have tried before. When done, reconnect to the Internet.

IT just happened and I made a mistake calling the number.. But once they talked to me I understood it is a spam.. They asked for 400£ to fix it !!!! I shut down their connection to my mac and closed the phone and followed ur advice.. It worked thank you...

Idk if this is the same kind of pop up but it said urgent message you have 6 viruses your iPhone will crash and can affect your device data such as contacts and apps to fix the problem download this app from the AppStore and it will automatically fix it is this fraudulent too

Spam. Don't download anything.

It's spam do not contact them or reply in any way.

I just had a similar issue but it was with Safari on my iPhone6. What can I do to stop it from recurring every time I use Safari?