GoKawiilSega's ALL.Net arcade network knocked offline by unauthorized server access
Sega's ALL.Net network, which links Japanese arcade cabinets for updates, online play and leaderboards, went down on November 1 after the company detected unauthorized third-party access to its servers. The outage affected both Sega titles like Maimai and CHUNITHM and Bandai Namco games such as Mario Kart Arcade GP DX. Sega Fave says customer personal and billing data were not on the compromised server, and Bandai Namco services have begun a gradual trial restart while Sega titles remain under maintenance.
GoKawiil's interpretation of the reporting above, not reported fact.
The incident shows how reliant modern arcade cabinets have become on always-on network connectivity for basic functions like online play and leaderboards, meaning a single server breach can silence an entire category of hardware across a country. Sega's cautious, staged restoration and lack of a firm resolution date suggests the investigation into the breach's scope is still ongoing, which could prolong revenue loss for arcade operators.
- Sega's ALL.Net network suffered a week-long outage after unauthorized third-party server access.
- Both Sega and Bandai Namco arcade titles relying on ALL.Net were affected.
- Bandai Namco services are gradually restarting on trial, while Sega titles remain under maintenance with no fixed resolution date.
Source: tomshardware.com — Mark Tyson, 2026-11-08
Published there as: “Japanese arcades suffer week-long blackout following Sega server hack”
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