People being hacked since the last Server Check.

No.

Whether you use your user name, or your email address, those are just dummy mnemonics that point to your user id. Your user ID is a number, set in stone, identifying your account. The other two, regardless of which you use, are just semantic aliases for that user id. If someone can access your account via the user id it doesn't matter what the alias is, they're going directly passed it.

Thanks for clarifying.

That does make sense. I do not remember what Nexon's message was back then about the user ID being a unique ID etc. etc. to discourage you from disabling it and switching to logging in with e-mail.

Furthermore, 2 well-known "merchants" claimed/observed their/other accounts who were breached did not have e-mail user names. I suppose that's how the rumour started.

It was worth a shot. I suppose there's nothing we can really do then. As someone said: Sitting ducks...