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Organizations involved in this incident2021-05-31Nippon Kaiji Kentei Kyokai: its Singapore office was hit by a cyberattack, and customer information of a Mitsui Sumitomo Insurance subsidiary that had entrusted it with claim surveys may have leakedOpen the incident

2 results

CompanyFinance and insuranceTokyo, Chiyoda[Through a supplier][Major]
Mitsui Sumitomo Insurance Company, Limited
Incidents 4Latest 2026-04-24Employees 12,731
NonprofitScientific research, professional and technical servicesTokyo, Chuo[Breached][Major]
Nippon Kaiji Kentei Kyokai
Incidents 1Latest 2021-05-31

	Role
Mitsui Sumitomo Insurance Company, Limited	[Through a supplier]	[Major]	Company	Finance and insurance	Tokyo, Chiyoda	12,731	4	2026-04-24
Nippon Kaiji Kentei Kyokai	[Breached]	[Major]	Nonprofit	Scientific research, professional and technical services	Tokyo, Chuo	–	1	2021-05-31