Lead · Security Guide
SMS verification only works on the assumption that you control your own phone number -- once an attacker takes that assumption away, the SMS code stops being your defense and becomes the key in the attacker's hand instead.
Chloe Brennan
·
July 30, 2026
Most people setting up exchange account security naturally focus on visible settings -- password strength, whether two-factor authentication is enabled. What they rarely realize is that if that two-factor authentication relies on SMS, the real security boundary of your account isn't sitting with the exchange at all -- it's in your carrier's hands. A SIM Swap Attack doesn't bypass the...