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Can I refuse MS Authenticator? (lemmy.ml)

submitted 9 months ago by Martin@lemmy.ml to c/asklemmy@lemmy.ml

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So my company decided to migrate office suite and email etc to Microsoft365. Whatever. But for 2FA login they decided to disable the option to choose "any authenticator" and force Microsoft Authenticator on the (private) phones of both employees and volunteers. Is there any valid reason why they would do this, like it's demonstrably safer? Or is this a battle I can pick to shield myself a little from MS?

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[–] Nighed@sffa.community 20 points 9 months ago (2 children)

The ms authenticator works in 'reverse' in that you type the code on the screen into the phone. I assume this is preferable to corporate as you can't be social engineered into giving out a 2fa token. It also has a "no this wasn't me" button to allow you to (I assume) notify IT if you are getting requests that are not you.

I don't believe that the authenticator app gives them access to anything on your phone? (Happy to learn here) And I think android lets you make some kind of business partition if you feel the need to?

[–] Max_P@lemmy.max-p.me 9 points 9 months ago (1 children)

And the authenticator is configurable and they can enforce some device security like not rooted, bootloader locked, storage encryption is on through the Intune work profile. If you work on a bank, you don't want the 2FA to even live on a device where the user gives root access to random apps that could extract the keys (although at this point come on you can probably afford Yubikeys).

As a user, not a fan, but as an IT department it makes complete sense.

[–] ramble81@lemm.ee 1 points 9 months ago

You’re thinking of Intune and the Company Portal app. That’s where the device enforcement comes into play. Authenticator can be installed on any system regardless of its state and their enforcement policies.

[–] englislanguage@lemmy.sdf.org 2 points 9 months ago

If it is just TOTP, you can use any other TOTP app, such as Aegis or FreeOTP+.

And no, Microsoft cannot be trusted on not doing anything bad. The app is full of trackers and has an excessive list of permissions it "requires".

For comparison, Aegis and FreeOTP+ work without trackers and way less permissions.

Microsoft has a long track record of leaks. Just naming the 2 most prominent:

Microsoft Edge leaks every single URL to Microsoft servers (source)
There are lots of reports that Microsoft had their general key stolen and not even notify it for months. It is unclear who had acces to that key. This is putting anyone at risk who uses any Microsoft product. (See for example here)