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.
Additionally, even if you are not using the same account name or password across multiple accounts, if you use repeated strings of character, phone numbers, birthdates, or other information that may be tied to your identity, this may make it possible for individuals to access your account simply by guessing its password.
Therefore, if you are using the same account name or password for your Square Enix account as for your other online accounts, or are using a password that might be easily guessed, we ask that you change your password immediately by going to the following page:
https://secure.square-enix.com/account/app/svc/reminder
Also, please note that accounts that are suspected of having been compromised will have their access temporarily restricted. Once login has been restricted, an email notification will be sent to the primary email address registered to the Square Enix account. This email will contain instructions on how to remove the login restriction. Players will be asked to reset their passwords and log in again.
Please visit the following link for more information about login restrictions.
http://support.na.square-enix.com/j/lbna
To further strengthen the security of your Square Enix account, we highly recommend using a Square Enix Security Token to act as an extra layer of protection against unauthorized access.
A free, downloadable smartphone app is available at the following locations:
Google Play: https://play.google.com/store/apps/details?id=com.square_enix_software_token
Itunes: https://itunes.apple.com/us/app/square-enix-software-token/id617970570?mt=8
Physical security tokens are also available for purchase here:
http://www.square-enix.com/na/account/otp/
Should instances of compromised accounts rise in future, there is the possibility we will perform a compulsory password reset across all Square Enix accounts.
We kindly ask for your cooperation in helping us better safeguard your personal information and account information.