A technical comparison explaining why SMS 2FA is vulnerable to SIM swapping while TOTP authenticators provide true hardware isolation.
SMS messages are easily intercepted via SIM-swapping fraud and cellular network routing exploits. Using a client-side TOTP tool like Web Authenticator ensures codes are generated locally inside your browser with zero cellular vulnerability.
Author is a software developer and technical contributor at AuthBro. They specialize in building performance-oriented browser productivity systems and writing developer guidelines.
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