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The City of Portland, Oregon

Office of Management & Finance

Bureau of Technology Services

BTS HelpDesk: 503-823-5199

1120 SW 5th Avenue, Suite 1111, Portland, OR 97204

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Microsoft Urges customers to move away from phone MFA

By Brian Ventura

On November 10th, 2020, Microsoft wrote an article outlining the dangers of using Phone-based Multi-Factor Authentication (MFA). They include both phone calls and SMS messages as dangerous due to the lack of security in the global phone system.

This is the latest in a series of changes recommending and now urging organizations like the City to move away from phone calls and text messages. The recommendation is to move to no-cost authentication applications like Microsoft Authenticator and Google Authenticator.

The City has the Microsoft Authenticator available for use and many people are already using this technology.

Please consider changing your MFA settings to leverage the Authenticator application, found in the Apple store (also available on Android in the Google Play store). BTS is coordinating this effort and will reach out to make this change.

https://techcommunity.microsoft.com/t5/azure-active-directory-identity/it-s-time-to-hang-up-on-phone-transports-for-authentication/ba-p/1751752