A tech support rep calls and offers to fix a computer bug you haven't even noticed, or a pop-up warning appears on the screen, instructing you to dial a number for help. In this con, scammers pose as ...

There are few certainties in life: Death, taxes, and turning your computer off and on when there’s a problem. This advice is usually the first tip you get from friends, family, and tech support.

Six months ago, Cindy Sanders, 68, bought a computer so she could learn how to email and have Zoom chats with her great-grandchildren. It’s still sitting in a box, unopened. “I didn’t know how to set ...