I’m currently using monero addresses as the sole authentication method for a custodial service, similar to how mullvad VPN has a single account number to authenticate. My understanding is that these are unique, and impossible to guess. For a custodial service, this makes withdrawing user funds trivial as well.
Can anyone tell me why this is a bad idea?
I don’t see a reason why it should be a monero address tied to it. Just make it a random string like mullvad does)