SEGA has suspended services linked to its ALL.Net arcade network and Aime platform after discovering unauthorized access to some of its servers, disrupting online play and other features across SEGA and Bandai Namco titles.
The Tokyo-based company said it took the services offline at 3 p.m. Japan time on November 1 to investigate the intrusion and verify system security. It is examining whether data was stolen and determining the scope of the incident.
SEGA FAVE develops arcade machines, prize products, and toys within the SEGA group. Its affected infrastructure supports connected arcade gaming, while Aime lets players use compatible cards to save and access game data across visits.
The disruption extends beyond online matches. SEGA’s list of suspended services includes online gameplay for ALL.Net-supported titles, arcade location information on their official websites, and associated .NET services.
Gameplay using Aime and PrizeON, the SEGA Lucky Kuji Online service, and new SEGA ID registrations were also suspended.
Bandai Namco Experience separately confirmed that the incident affects eight of its ALL.Net-supported titles. These include Taiko no Tatsujin, Mario Kart Arcade GP DX, The Idolmaster TOURS, JoJo’s Bizarre Adventure: Last Survivor, and Wangan Midnight Maximum Tune 6RR PLUS.
The consequences vary by game. For Mario Kart Arcade GP DX, an official notice warns that cabinets would progressively become unavailable from November 3 onward and that offline operation would also be unavailable.
For players, the immediate confirmed impact is loss of access to supported services, while the privacy implications remain under investigation.
SEGA said its initial investigation had found no evidence that information relating to customers or business partners had been exfiltrated. That preliminary finding does not establish that no information was exposed, as the company is still assessing the incident.
According to SEGA, payment information, including credit card details, was not stored on the compromised servers, and those records were unaffected by the unauthorized access.
The announcement does not identify the intruder, explain how access was gained, or specify when the intrusion occurred. It also does not characterize the incident as ransomware or disclose how many users could be affected.
SEGA said completing the investigation would take additional time and that it would announce service resumption after finishing its investigation and security checks. The company also pledged to strengthen its information security measures.
The gaming giant directs customers to its arcade product pages for game-specific status information and to its AM user support team for incident-related inquiries.
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