Scams often use fear to trick people—and of such schemes, scareware is extremely obvious about this tactic. On a malicious website, pop up windows wrest control of your screen, blaring alarms that your PC has been compromised or you’re being spied upon. But if you call the number or download the “antivirus” software in the alert, you actually make yourself vulnerable. Last fall, Microsoft announced it would begin blocking scareware within its Edge browser , but the first...
