this post was submitted on 29 Apr 2025
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iiiiiiitttttttttttt

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TranscriptA wafrn woot (post) by @tinker@infosec.exchange saying "Microsoft Authenticator needs me to validate with Authenticator in order to log in with Authenticator to use it to authenticate another app with Authenticator. Here is the app telling me to open itself to validate itself with itself. #infosec #iHateComputers" It has a screenshot showing the microsoft authenticator app.

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[–] Broadfern@lemmy.world 29 points 16 hours ago (4 children)

This is why I hate passkeys and authenticators (as mandatory requirements). The moment I lose my phone I’m just completely fucked with no recourse, in actual use case.

[–] TrickDacy@lemmy.world 8 points 12 hours ago (1 children)

Yeah I had a beautiful moment trying to use Google's find my phone feature in another country when it asked me to use MFA on...my fucking phone. Turned off Google MFA forever after that near nightmare. Luckily another kind tourist found and turned in my phone to the nearest worker at the place I was visiting

[–] CosmicTurtle0@lemmy.dbzer0.com 19 points 14 hours ago (1 children)

You're supposed to have backups for MFA. Though for passkeys (specifically ones for yubikey) are really hard to backup.

I am not always going to remember to register my primary yubikey and my two backups that are physically never together.

[–] PlexSheep@infosec.pub 2 points 5 hours ago (1 children)

That's why you always register a second hardware token. Those things could get lost.

[–] CosmicTurtle0@lemmy.dbzer0.com 2 points 3 hours ago

I've started employing one physical hardware token as my primary means of MFA and a TOTP or backup codes if the website provides them.

I have two backup hardware tokens (so three total) but it's become impractical to keep them all in sync. And not all websites support multiple hardware tokens.

My initial idea is to have a key locked at home in the event that I lose my primary key. The third was just a spare I got at work.

Also the number of websites that don't have proper MFA that really should amazes me.

E-Trade has that shitty symanticVIP MFA. My primary bank still does cell phone MFA with no plans to do TOTP.

Honestly, the bare minimum should be TOTP.

And remember kids: passkeys by themselves are not MFA.

[–] Limonene@lemmy.world 20 points 15 hours ago (1 children)

I use andOTP for two factor authentication. It's free and open source, and available from the F-Droid app store. It allows you to backup your cryptographic keys in plaintext, with a password, or asymmetrically encrypted using OpenPGP. I keep my backups in a fireproof safe on two flash drives.

[–] Broadfern@lemmy.world 7 points 14 hours ago (1 children)

Thank you for the resources, I’ll be sure to check them out.

Unfortunately I’m still on iOS atm (hoping to switch to Android -> GrapheneOS down the line, when I have the finances), so I’m stuck trying to find something that’ll work between that and my Linux desktop, with GoogleAuth being my primary OTP app.

Cursory Internet search suggests something called 2FAS for mobile so I’ll see if it’s a cross platform option. I actually didn’t know non-corpo authenticators existed until today so it’s an exciting path to explore. /gen /pos

[–] vodka@lemm.ee 4 points 13 hours ago

I would highly recommend Ente Auth for 2FA on iOS devices.

It allows for export to a file that you can then import into other apps. You can also use their own sync service.

Personally I use Ente Auth on iOS and Aegis on Android. Both support backups to files (I back up to my own nextcloud) and imports from each other. I could just use Ente Auth on my android devices too, but I just prefer Aegis.

[–] Wahots@pawb.social 6 points 12 hours ago

I broke my phone, and this actually happened to me. Google had set my old broken phone as a default passkey without my knowledge, back when they were rolling it out. My sim card was retrievable, so I used SMS to get in after my password. Turns out, that's not good enough. It took me days to get into my idiotic accounts (including Google authenticator for work) because of all the security hoops, even with backup codes, password managers, and a SIM card.

My saving grace was Firefox Sync, which allowed me to get into Microsoft accounts and slowly start unwinding Google's insane requirements.