Your cell phone number could be hijacked unless you add a PIN to your carrier account

Two-factor authentication doesn't help if someone has already stolen your phone number.

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Glenn Fleishman is the author of dozens of books. His most recent include Take Control of Your M-Series Mac, Take Control of Securing Your Mac, Take Control of Zoom, and Six Centuries of Type and Printing. In his spare time, he makes Tiny Type Museums. He’s a senior contributor to Macworld, where he writes Mac 911.
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