If your computer flags a file as a "Trojan" or "Stealer," do not disable your protection to run it.

Panic hit him like a physical weight. He tried to move the mouse back, but it fought him, clicking "Change Password" on his primary email account. His phone buzzed on the desk: Security Alert. Your password has been changed.

The screen went black. His computer fans whirred into a high-pitched scream before the entire system shut down. When he tried to reboot, all he saw was a single line of white text on a void of black: Operating System Not Found.

Then, a new text file opened on his desktop. The typing was slow, deliberate: