(800) 257-8778

I just have it on the screen, saying it's Microsoft Official Support, saying that this is critical alert from Microsoft, that my computer was infected with virus and spyware and I should call this number immediately. If I close this page before calling, they will be forced to disable my computer to prevent further damage to their network.
It sounds fishy.
Meanwhile I scanned my PC with McAfee and Malware Bytes and nothing wrong found.