"Your system is infected with (3) Viruses” when opening a Safari tab

in almost all messages about SPAM you can read what to do:

Quit Safari,

then open Safari whole holding the Shift key,

Safari->History: clear all history,

Safari->Preferences->Advanced: check the "Show develop menu..." at the bottom.

Safari->Develop: select "Empty Caches".

after this the spam should not come on after this.

I got this same popup and it appeared legit because they gave the impression that the Mac Tech Support team was sending this message. It was suggested I scan immediately and I downloaded Mac Speedup Pro. I have not gone any further but I now believe this is a scam and want to find a way to remove this download from my computer.

Note for BDAqua's link.

Make sure to follow ONLY the manual instructions. Clicking on either of the very front-and-center links to use CleanMyMacX or ComboCleaner would only succeed in trading one piece of trash for another.

Thomas Reed (member here and now working at MalwareBytes) has noted that you can put the name of any app for Windows or Mac you want to remove in a web search and you will hit hundreds of sites pushing you to download some tool to do the work for you. They've found that in many (such as, MOST) cases, the tool is more dangerous than what you're trying to remove from your drive.

I have the same popup you have 3 virus warning every time I am on Safari Kijiji search. I can't search Kijiji because it pops up every 30 seconds. Your previous advice doesn't work to remove this. I even did a complete system restore. Still there. Force shut down of Safari, Malwarebytes says all clean. So my question is "Is there anything to stop this other than anything that has be advised so far because I have tried it all

People like me keep posting because we know its a scam but that doesn't fix the problem. It is a continuous annoying pop up that prevents you from using Safari. No advice given so far has helped, unless I have missed something. I have forced shut, deleted everything, complete system restore 2x Malwarebytes, clean my Mac ...so the question isn't whether or not it is a scam but how do you get rid of it???

I haven’t found a way to stop the issue on Kijiji while using my Mac. There was a period about a week ago where it seemed to be under control, but for now I have given up using the site on the Mac. It doesn’t seem to affect me while searching the site on my iPad.

People like me keep posting because we know its a scam but that doesn't fix the problem. It is a continuous annoying pop up that prevents you from using Safari. No advice given so far has helped, unless I have missed something.

It is entirely possible that the website has been altered and those JavaScript popups are embedded into the web page. There is nothing you can do to stop that besides avoiding the website. That is what the instructions about Force Quitting Safari and starting up with Shift key held down are for. If the website is compromised, there is nothing you can do besides maybe try to contact the webmaster and report it. It may be that they are complicit, though.

You could try blocking JavaScript, but that would likely render the website useless.

The second cause of perpetual popups is you have installed Adware. That has also been covered ad infinitum.

This is a new one though

It's not new at all. It's been around for years.

And, it's not any different.

The attackers prey on the ignorance of their targets.

There is not any way possible for anyone to view your Mac through your router from outside without you actively enabling that connection.

It is the same scam. It may use different words and pictures, but it is the same scam.

It is always a scam.

These 'Warnings' look startlingly real

Yes, but everyone who uses the internet should understand that nothing on the internet can see your computer, much less "scan" it for anything. It shouldn't matter how real it looks.

I just got the same warning message and asked to download a software to clean my Mac. The screen is the image of the Apple page and looks ok, but I am also skeptic of this type of message. I decided to go to the Apple website and look for this issue when I saw your question.

I have also received that popup several times over the past week. It relates to software called MAC SPEEDUP PRO, which is marketed by several overseas companies, one of which is in Malta and was billed under "digital-ur.com." I did NOT proceed to download the product, as I do not trust it.

Yes, I got that pop-up several times and finally thought it was really from Apple. I had a nice long talk with a man with a heavy accent who was desperate to have me buy his $600 protection plan! He would not let my computer go until I told him I felt like I was being kidnapped. Don't know who they were-- he said they were authorized by Apple, but I doubt it.

Again: all such popup are scams. The “man” you had the chat with is a criminal. If you allowed the criminals to access your computer, consider it compromised. If you provided bank information, consider it compromised.

And do not ever call a phone number from a popup like that. They are trying to steal your identity and take over your computer.

When you get such a phony website, sometimes it is hard to get rid of it.

The keys command-option-escape can be held down together to open the Force Quit window, where you can select the web browsers that are open (Chrome, Safari, Firefox), and force quit them. When you reopen the browser, hold the shift key, so it does not restore the last browsing session or gives you the option to prevent it.

It is possible if this is happening that you got infected with a trojan horse at an earlier time. http://www.etrecheck.com/

will make a report of what is installed, that we can help you examine to determine if one did get installed.

I keep getting redirected to a website that looks like Apple and it is warning me that my computer is infected with a virus and trojans and phishing malware. Is this legit? The redirected website looks like Apple but clearly states the it is not secure in the browser field.