Sega launched ALL.Net in 2004 to give arcade machines automatic updates, data logging, online play and national leaderboards. Sega games such as Initial D The Arcade and maimai rely on it, as do Bandai Namco's Mario Kart Arcade GP DX and Gundam Extreme Vs. During the outage, arcades showed rows of dark screens.
In an apology dated November 2, the operator said services were suspended a day earlier after it found "unauthorized access by a third party" to its servers. It said customers' personal information and billing data were not on the compromised server, and asked for time to investigate and run safety checks before restoring service.
Bandai Namco titles are now gradually resuming on a trial basis, with online play and card use enabled. Sega products remain under maintenance with no estimate for a fix, and an update is promised for November 10. Offline machines were unaffected, and Taito and Konami run separate networks.