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Organizations involved in this incident2021-08-20Oriental Consultants group: ransomware hit several servers, encrypting much of its business data, which may have leaked; data entrusted by Ichikawa City and Saitama Prefecture was also stored thereOpen the incident

10 results

CompanyAccommodation, food and drinkTokyo, Shinjuku[Breached][Major]
Oriental Consultants Global Co., Ltd.
Incidents 1Latest 2021-08-20Employees 554
GovernmentPrefectureGunma, Maebashi[Through a supplier][Major]
Gunma Prefecture
Incidents 1Latest 2021-08-20
GovernmentMunicipalityOkayama, Kurashiki[Through a supplier][Major]
Kurashiki City
Incidents 1Latest 2021-08-20
CompanyAccommodation, food and drinkTokyo, Shibuya[Breached][Major]
Oriental Consultants Co., Ltd.
Incidents 1Latest 2021-08-20
GovernmentPrefectureTokyo[Through a supplier][Moderate]
Tokyo Metropolitan Government
Incidents 9Latest 2026-10-21
GovernmentPrefectureSaitama[Through a supplier][Moderate]
Saitama Prefecture
Incidents 4Latest 2026-10-19
GovernmentPrefectureShiga, Otsu[Through a supplier][Moderate]
Shiga Prefecture
Incidents 2Latest 2026-10-21
GovernmentMunicipalityChiba, Ichikawa[Through a supplier][Moderate]
Ichikawa City
Incidents 2Latest 2026-10-21
GovernmentMunicipalityChiba, Ichihara[Through a supplier][Moderate]
Ichihara City
Incidents 1Latest 2021-08-20
GovernmentMunicipalityTokyo, Katsushika[Through a supplier][Moderate]
Katsushika City
Incidents 2Latest 2021-08-20

	Role
Oriental Consultants Global Co., Ltd.	[Breached]	[Major]	Company	Accommodation, food and drink	Tokyo, Shinjuku	554	1	2021-08-20
Gunma Prefecture	[Through a supplier]	[Major]	Government	Prefecture	Gunma, Maebashi	–	1	2021-08-20
Kurashiki City	[Through a supplier]	[Major]	Government	Municipality	Okayama, Kurashiki	–	1	2021-08-20
Oriental Consultants Co., Ltd.	[Breached]	[Major]	Company	Accommodation, food and drink	Tokyo, Shibuya	–	1	2021-08-20
Tokyo Metropolitan Government	[Through a supplier]	[Moderate]	Government	Prefecture	Tokyo	–	9	2026-10-21
Saitama Prefecture	[Through a supplier]	[Moderate]	Government	Prefecture	Saitama	–	4	2026-10-19
Shiga Prefecture	[Through a supplier]	[Moderate]	Government	Prefecture	Shiga, Otsu	–	2	2026-10-21
Ichikawa City	[Through a supplier]	[Moderate]	Government	Municipality	Chiba, Ichikawa	–	2	2026-10-21
Ichihara City	[Through a supplier]	[Moderate]	Government	Municipality	Chiba, Ichihara	–	1	2021-08-20
Katsushika City	[Through a supplier]	[Moderate]	Government	Municipality	Tokyo, Katsushika	–	2	2021-08-20