
Gold farmers often make use of accounts stolen from their previous customers or by breaching security at third party websites and matching lists of usernames and passwords, and as with any big MMO launch, Final Fantasy XIV is already seeing a surge in stolen accounts. In a post on the FFXIV forums, Square has confirmed that a third party source is using a list of stolen accounts from an outside website in order to break into player accounts and use them for gold farming and chat spam.
Currently, we have confirmed that a third party is using account names and passwords, thought to be obtained from security breaches of other companys’ online services, in attempts to gain unauthorized access to Square Enix accounts. If you are using the same account name or password as your Square Enix account on other online services, there is a much greater chance that a security breach at any of the other online services could potentially lead to your Square Enix account being compromised.
Accounts suspected of being stolen will be restricted until the user can verify their ownership.
(Source: FFXIV)