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Organizations in Japan involved in cyberattacks and data leaks. Filter by location, industry or type, size and incident involved.

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Organizations involved in this incident2026-11-06MHLW: JANIS cyberattack puts up to 11,652 medical-institution contacts’ data at riskOpen the incident

2 results

GovernmentNational governmentTokyo, Chiyoda[Through a supplier][Major]
Ministry of Health, Labour and Welfare
Incidents 6Latest 2026-11-06
GovernmentScientific research, professional and technical servicesTokyo, Shinjuku[Breached][Major]
Japan Institute for Health Security
Incidents 2Latest 2026-11-06

	Role
Ministry of Health, Labour and Welfare	[Through a supplier]	[Major]	Government	National government	Tokyo, Chiyoda	–	6	2026-11-06
Japan Institute for Health Security	[Breached]	[Major]	Government	Scientific research, professional and technical services	Tokyo, Shinjuku	–	2	2026-11-06