1800 958 232 is 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. Your internet browser suddenly freeze and your all computer is frozen. Best way is to shut your computer down ( by pressing power button for 20 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 free phone call number is targeted to Australian 's 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