alfaniner
Penultimate Amazing
That used to be (might still be) a big security hole in some operating systems. If you could get to view the failed login attempts, which often required normal or only slightly elevated access in some systems, you could make a reasonable stab at getting someone's password. Just scan the failed logins for something that looked like a password and not a login name, then match that with whatever user logged in 10 seconds later.
I'd think that's a method probably exploited by scam websites. Once they have an email and password (which many people don't differ among sites), just try a few banking sites to see what works. Fortunately, many have gone to two-factor authorization or other security checks.