In real life, however, this kind of thing happens all the time. Someone forgot to write down the login when they left and no-one caught it in the offboarding.

In real life, however, this kind of thing happens all the time. Someone forgot to write down the login when they left and no-one caught it in the offboarding. Or someone set up 2FA on a system but didn't put that info into 1Password / the wiki, etc.