Remove OSFirewall.exe fake Tech Support scam

OS Firewall, also known as OSFirewall.exe, stands for a scareware application belonging to the Rogue.Tech-Support-Scam clan that shows bogus security notifications that mention your PC is contaminated and then tells you to call the 1-855-270-1376 distance tech support toll-free number. Such alerts are meant to scare you into believing your PC has a virus so that you call the suggested number. Such telephone numbers, by the way, are for distance support companies who will attempt to make you purchase unwanted support services or applications.

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