A blue screen of death will appear on your screen and you'll be promoted to call a fake customer service number.
Microsoft is warning of fake copies of its Security Essentials that if executed will throw a fake blue screen of death, pwn machines, and lead users to technical support scams.
Redmond regards the threat dubbed Hicurdismos as a severe threat which compromises PCs typically through bundled software installers and drive-by-downloads.
Microsoft's anti-malware and security men Francis Tan Seng and Alden Pornasdoro warn customers Hicurdismos will throw a full screen blue screen of death, disabling the ctrl+alt+delete task manager to prevent the user bypassing it, and hiding the mouse cursor to make it appear more legitimate.