The website of IDC Frontier Inc. shows a notice unauthorized access on Oct. 7. (Chika Yamamoto)
IDC Frontier Inc., a SoftBank subsidiary that provides cloud services, said Oct. 7 that a ransomware attack caused a system outage affecting 495 corporate and local government customers.
The Tokyo-based company said it is still investigating the scale of the damage and whether any personal information was compromised.
The cyberattack has also shut down the logistics system at Nissui Logistics Corp., a subsidiary of major seafood company Nissui Corp., which uses an IDC Frontier data center.
Nissui said Oct. 8 that 1,200 business partners, including retailers, restaurant operators, food wholesalers and food producers, have been affected.
The system failure has halted inbound and outbound logistics operations at 17 sites across Japan. Nissui said restoration was unlikely to be completed on Oct. 8 and that it is investigating whether any personal information or customer data was leaked.
The attack against IDC Frontier has also affected Ibaraki Prefecture, which outsources the operation of its websites to the service provider.
The websites of the prefectural government and prefectural police became inaccessible.
(This article was compiled from reports by Kaito Higa, Toru Furusho and Seisaku Yamamoto.)
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