You’re working on your computer when, suddenly, a message pops up on the screen: “Virus detected! Call now for a free security scan and to repair your device.” That’s a tech support scam. Don’t call, text, or email. Legit tech support companies don’t operate that way. Scammers pose as big-name companies and use pop-up messages, fake websites, and phone calls to trick you into thinking your computer has an urgent problem.