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Authy got hacked, and 33 million user phone numbers were stolen
(appleinsider.com)
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this post was submitted on 05 Jul 2024
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Does anyone have a suggested alternative for authy? (Please read the whole post before responding)
I'd love to go with an open source solution as I've done with my password manager, but that doesn't seem possible with one of my big requirements:
Scenario: I've had my phone robbed abroad and managed to buy a new one and loaded my ESIM back into it—I need to recover access to my 2 factor database via SMS so I'm able to log into my cloud storage and access my password database.
At this point I'd probably be happy to host a service myself on something like AWS and use SNS for this requirement, but I'm not sure anything like that exists ready to go. I'm not particularly interested in rolling something myself for this.
I'd be dubious of jumping from one closed source product to another, but if there's a particularly good option I'm all ears, I've been otherwise happy with authy for about a decade now, but this plus the retirement of the desktop app have me looking elsewhere.
Edit: added emphasis
I use Aegis, which I periodically back up manually off phone.
(reposted from another comment mentioning aegis)
I think the suggestion here is to back up Aegis. I do something similar using Aegis + SyncThing.
I have a folder on my phone that is synced with my PC. Every so often, I will back up Aegis to that folder, and then it automatically syncs to PC.
Oh, in that case it's not quite equivalent, because my cloud storage is protected by the two factor code stored in my Authy OTP database.
I would still need to access the OTP database before I could access the cloud storage, which is where it would be stored in this scenario.
Forget your existing cloud. Your 2FA backup doesn't need to be protected by 2FA; just encryption and a strong/unique passphrase. Your 2FA backup can't be used to access any account on its own, without each password. Most OSS E2EE services allow you to create a free account; many without an email. Pick 2 for redundancy, create a NEW account, and set a NEW passphrase (like your 2nd "master" password). Before you transit upload your OTP backup to both of them.
This approach is probably more secure than SMS to access 2FA, especially vs a closed source provider like Authy, and especially if your 2FA export is also encrypted with a different password. If you're already using a password manager and unique passwords for everything, you're already 95% more secure than everyone else, and removed the primary need for 2FA (password reuse and theft). If you're doing everything else right, 2FA only makes you 5-10% more secure, and covers far less-likely threats (email takeover, MITM, etc). Sys admins have been raw dogging SSH and PGP keys every day without a 2nd factor, for decades.