This helps if you’ve had to reset your phone or get a new one and you’ve lost your two-factor authentication codes - but you still have your phone number. Online services don’t want people to lose access to their accounts, so they generally allow you to bypass and remove that two-factor authentication with your phone number. This is a problem for practically every service. By the time you realize something is wrong, they can have access to those accounts. Your phone number becomes the weak link, allowing your attacker to remove two-step verification from your account - or receive two-step verification codes - via SMS or voice calls. RELATED: How to Avoid Getting Locked Out When Using Two-Factor Authentication How secure is your phone company’s voice mail system, exactly? How secure is your voice mail PIN - have you even set one? Not everyone has! And, if you have, how much effort would it take for an attacker to get your voice mail PIN reset by calling your phone company? They could gain access to your voice mail, try to log in to websites at 3 a.m., and then grab the verification codes from your voice mailbox.
Heck, an attacker might not need access to your full phone number.
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