Over the past few days people playing FINAL FANTASY XIV: A Realm Reborn will have noticed odd effects like random disconnections, lag, login issues. Not things you usually find in that game.
Square have posted a statement on the Lodestone saying the following:
We would like to take this opportunity to make a report regarding the login difficulties that took place over the last few days.
Currently we are experiencing DDoS attacks from an anonymous third-party targeting the FINAL FANTASY XIV game servers on the NA/EU data center.
However with the attack we are currently experiencing, only a massive number of access attempts are being made to the server where both character data and personal information of our customers are not in danger of being exposed.
Due to this attack, our game servers, network equipment and network connection are being hit with heavy load at an extensive level, which is causing a disconnection from the game and login difficulties.
Our technical staff is taking every possible measure to address this issue but the attack is still continuing to take place by changing their methods at every moment. We will continue to monitor and work on recovery from every possible angle.
We apologize for any inconvenience this may be causing.