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by WirelessGigabit 1217 days ago
To make matters worse, I don't even know on which websites I have my YubiKey registered.

I just checked mine, and it shows my Microsoft credentials and NVidia.

But I know for a fact that I also use it on Vanguard and BofA (which doesn't support keys on iOS in case you're wondering).

So I 1) cannot extract the masterkey from my YubiKey and move it to another one to make an exact duplicate 2) cannot discover the places where I registered my key

For SSH you can have a 'sk' key and a normal one [0]. I went with the normal one and moved it into the YubiKey, at least that way I have a backup sitting SOMEWHERE.

[0] https://cryptsus.com/blog/how-to-configure-openssh-with-yubi... (not affiliated at all)