A warning appeared on my screen telling me I had a virus, so I called 844-454-2555. Securefix wanted $750 for an advanced network firewall security. They said Russians hacked my computer. I spent all day on the phone with these people. I called back one time and got a bistro and wanted information about staying there. I called my credit card and they called someone, and everything seems to be ok again. I left them a message and they called me back. They are foreign and hard to understand. They said if I visited porn sites my computer would be hacked. I also went to fastsupport.com.