This may account for some of the game’s server issues over the past few days; countermeasures are still being worked on. The game has also had a minor patch to address other technical issues and bugs, so players should have a better Stormblood experience waiting once they log on if the DDoS attacks don’t make it unplayable. (And if they get through the queues, but that’s just to be expected.)
Final Fantasy XIV reports today that it has been getting hit with attacks for several days now, causing network difficulties that the engineers are working as hard as possible to counteract. The official announcement is that the attacks have hit on June 16th, June 18th, and June 20th, with the attacks considered to still be ongoing.