No they haven't. If you're 300% certain you typed the correct password, contact SE ASAP to have them freeze and recover your account. Check your computer for virus, and if you used the same ID/password as for some other games, it might/may be why. There's a notice on the front page that some other game company got hacked and RMT try to connect to FFXIV accounts using the ID/password they got from this hack.