Sega’s arcade network was breached. A week later, Sega games in Japan are still offline
Walk into a Japanese game center this week and you might have found something strange: rows of Sega cabinets with black screens and nobody playing. The reason is a server breach. Sega Fave, the Sega company that runs Japan’s biggest arcade network, says a third party got into its servers, and a week later Sega’s own networked games are still offline.
What happened
In an official apology dated November 2, 2026, Sega Fave said some of its servers had been “subjected to unauthorized access by a third party.” The affected servers run ALL.Net, the network that links arcade machines in game centers, and Aime, the IC-card system players use to log in and save their progress. The company suspended both services at 3 PM on Sunday, November 1 (Japan time) to investigate.
Sega Fave has not said who was behind it or how they got in.
Was player data taken?
Sega Fave says its initial investigation found no leak of customer or business-partner data, and that payment details, including credit card numbers, were not stored on the compromised server. It also says the investigation is still going and will take time. So the honest answer today is: no evidence of a leak so far, but the company hasn’t finished checking.
Which games went dark
ITmedia News visited an arcade in the Kanto region on November 5 and found most of its video game corner silent. Because ALL.Net and Aime are shared, the outage hit more than Sega’s own titles:
| Publisher | Games named as affected |
|---|---|
| Sega | Initial D THE ARCADE, maimai DX, CHUNITHM, Eiketsu Taisen |
| Bandai Namco | Taiko no Tatsujin, Mario Kart Arcade GP DX, Gundam Extreme Vs. 2 Infinite Boost, Wangan Midnight Maximum Tune 6RR PLUS |
ITmedia says Sega’s ID services and its online prize lottery were also caught up in the shutdown. Older offline cabinets weren’t affected, and Tom’s Hardware notes that Taito and Konami run their own separate networks.
Where it stands today
On the morning of November 8 (Japan time), the official ALL.Net account posted that some features are back, and Bandai Namco titles will “gradually resume operation on a trial basis,” with online play and card use enabled. Sega’s own titles are still under maintenance with online services unavailable, and there is no estimated time for them to return. ALL.Net says its next update is due around 9 AM on Tuesday, November 10, Japan time.
PCGeek’s take
This is what happens when a whole industry leans on one login server. Arcade games used to be self-contained boxes. Now a rhythm game or a racing cabinet needs a live connection for card logins, saves, leaderboards and updates, and when that link goes down the machine is a very expensive black screen. Arcades lose a week of income, and players lose access to progress tied to their cards.
Credit to Sega Fave for shutting things down fast and saying what it knew. The open questions are the ones it hasn’t answered yet: how the attacker got in, whether anything left the building, and when Sega’s own games come back. We’ll update this post after the November 10 notice.
Photo: a maimai DX arcade cabinet, by TerraGaming via Wikimedia Commons (CC0). It’s a stand-in, not a machine from this outage.
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