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The government compiles an emergency package and police open a nationwide joint investigation; GMO holds its first press conference; Arara Message's breach reaches 81 million addresses and its clients start counting; Nojima, Iris Plaza and @cosme join the list; and SEGA's arcade network goes dark.
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After unauthorized access to servers behind ALL.Net and Aime, the network and player card system that connect arcade machines across Japan, SEGA Fave stopped both on November 1. Five days later, cabinets from Initial D to Taiko no Tatsujin and Mario Kart were dark or limited, tournaments were cancelled, and there was no restart date.
IncidentsUpdated
NEC says a company it uses for system development and maintenance was hacked in late September 2026, and its legitimate accounts were used to break into NEC customers' systems and encrypt servers. Files in a cloud storage NEC used to share project information also leaked.
IncidentsUpdated
A ransomware attack on IDC Frontier's IDCF Cloud from October 7, 2026 hit 495 companies and local governments. Its final report says attackers broke into the customer portal's login system through an open-source flaw, took admin rights over the virtualization platform and encrypted virtual servers. It found no customer data taken; backups survive for 206 customers.
On September 23, 2026, heavy external traffic overloaded J:COM's DNS servers and cut internet for up to 4.08 million households for nine hours. Was it a DDoS?