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Organizations involved in this incident2026-10-07IDC Frontier: ransomware attack on IDCF CloudOpen the incident

10 results

CompanyInformation and communicationsTokyo, Minato[Breached][Critical]
IDC Frontier Inc.
Incidents 2Latest 2026-10-21
CompanyTransport and postal servicesAichi, Nagoya, Nakamura[Through a supplier][Moderate]
Central Japan Railway Company
Incidents 3Latest 2026-10-21Employees 18,518
CompanyTransport and postal servicesTokyo, Shibuya[Through a supplier][Moderate]
East Japan Railway Company
Incidents 2Latest 2026-10-21Employees 39,598
GovernmentPrefectureIbaraki, Mito[Through a supplier][Moderate]
Ibaraki Prefectural Government
Incidents 2Latest 2026-10-21
GovernmentPoliceIbaraki, Mito[Through a supplier][Moderate]
Ibaraki Prefectural Police
Incidents 2Latest 2026-10-21
CompanyTransport and postal servicesFukuoka, Fukuoka, Hakata[Through a supplier][Moderate]
Kyushu Railway Company
Incidents 4Latest 2026-10-21Employees 6,483
CompanyWholesale and retail tradeHiroshima, Hiroshima, Higashi[Through a supplier][Moderate]
Izumi Co., Ltd.
Incidents 3Latest 2026-10-21Employees 2,895
CompanyManufacturingTokyo, Minato[Through a supplier][Moderate]
Nissui Corporation
Incidents 1Latest 2026-10-07Employees 1,489
CompanyManufacturingOsaka, Ikeda[Through a supplier][Moderate]
Daihatsu Motor Co., Ltd.
Incidents 2Latest 2026-10-21
CompanyInformation and communicationsTokyo, Shinjuku[Through a supplier][Moderate]
Soliton Systems K.K.
Incidents 1Latest 2026-10-07

	Role
IDC Frontier Inc.	[Breached]	[Critical]	Company	Information and communications	Tokyo, Minato	–	–	2	2026-10-21
Central Japan Railway Company	[Through a supplier]	[Moderate]	Company	Transport and postal services	Aichi, Nagoya, Nakamura	18,518	–	3	2026-10-21
East Japan Railway Company	[Through a supplier]	[Moderate]	Company	Transport and postal services	Tokyo, Shibuya	39,598	–	2	2026-10-21
Ibaraki Prefectural Government	[Through a supplier]	[Moderate]	Government	Prefecture	Ibaraki, Mito	–	–	2	2026-10-21
Ibaraki Prefectural Police	[Through a supplier]	[Moderate]	Government	Police	Ibaraki, Mito	–	–	2	2026-10-21
Kyushu Railway Company	[Through a supplier]	[Moderate]	Company	Transport and postal services	Fukuoka, Fukuoka, Hakata	6,483	–	4	2026-10-21
Izumi Co., Ltd.	[Through a supplier]	[Moderate]	Company	Wholesale and retail trade	Hiroshima, Hiroshima, Higashi	2,895	–	3	2026-10-21
Nissui Corporation	[Through a supplier]	[Moderate]	Company	Manufacturing	Tokyo, Minato	1,489	–	1	2026-10-07
Daihatsu Motor Co., Ltd.	[Through a supplier]	[Moderate]	Company	Manufacturing	Osaka, Ikeda	–	–	2	2026-10-21
Soliton Systems K.K.	[Through a supplier]	[Moderate]	Company	Information and communications	Tokyo, Shinjuku	–	–	1	2026-10-07