1800 941 026: Re-routed numbers to a nasty and sophisticated call centre based in India that pretends to be working as or for Microsoft support team.( Apple computers are an easy target). They are FAKE, FAKE, FAKE. Those scums are installing malwares and viruses from popups or with bundles software as Adobe Flash. More important, Adult sites are 98% to be found as their favourite way of passing their viruses (eg:Xtrem.boards). Your internet browser suddenly freeze and your computer is frozen. Best way is to shut your computer down ( by pressing power button for 20 to 40 seconds or to make sure unplug Your computer). Fear and stress will take over with messages saying that your computer has had a virus attack. Restart with a clean browser cache and a run of a antivirus if you have one. Talk to someone if you are not reassured or still in distress.This is a free phone call number, that’s targeting Australian audience. Note that nothing has changed in your computer system but check if some extensions had been added to your browser.If you do a lot of surfing the net, always run Task Manager that can stop any further damage. Do not let those curry scumbags win.( any clues where you did get that popup or blue screen?)
https://discussions.apple.com/docs/DOC-8771

advertised online ad pop up 100 precent scammers don't even kown how macs works and ask for bank card number

When this happens I press control alt delete and end process of the internet explorer, firefox etc then open up browser again and before it opens fully I close with the X then open it up again and it should be good, I also then clear the history just in case

If you did not give remote access... or did not downloaded, did not install anything your computer is 100% as before. Their popup are simple Java script pages. If you did give access to those curry scumbags, I would immediately take my laptop or PC to your local specialist.( you will save time and money). Those scumbags are smart in doing their jobs. When you surf... always run your TASK MANAGER.

i called this n gave remote acces then after i gave my phone nuber and name i clicked on and immeditely cut them off n turned off n got caspersky to run full scan anyone any advice