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by type_Ben_struct 811 days ago
I’m still disappointed by Apples implementation of security keys. I want to be able to prevent all 2FA methods other than security keys, but it still seems possible in certain flows to authorise a new login with another iOS device making it vulnerable to this attack.
3 comments

Interesting. I was contemplating moving to security keys (which according to the setup flow "replaces verification codes" but IIUC you're saying one can still fall back to verification codes in some flows?
Just change over to using HSMs instead of push.

https://support.apple.com/en-gb/HT213154

If I was doing something that needed heavy security, but I'm just a boring average joe. My critical accounts are protected by TOTP on one (backed up) device only, other things are kind of "good enough" with passkeys and passwords. If I ever become a criminal mastermind or double agent I'll probably dive into such methods though.
YubiKeys aren't HSMs, Yubico sells an HSM though.

https://www.yubico.com/product/yubihsm-2-series/yubihsm-2-fi...

What flows have you found not to use security keys?
All of them.