Microsoft is killing off SMS authentication codes as AI makes phishing attacks even more dangerous
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In brief: Sending codes to users via SMS has long been discredited as the least secure multi-factor authentication method, and Microsoft will soon discontinue support for this practice altogether. Citing the rising danger of hackers armed with AI tools, the company has now provided a timeline for phasing out SMS codes.
IT admins will no longer be able to log into Microsoft Entra ID accounts using SMS-based 2FA codes starting February 1. The deadline is part of Microsoft's broader shift toward passkeys, widely considered one of the most secure login methods.
Admins recently began receiving an email from the company, obtained by Windows Latest, which outlines the SMS phaseout. Earlier this year, a support document also warnedthat Microsoft will eventually cease sending SMS codes to ordinary Windows Home and Professional users,...
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