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Organizations involved in this incident2021-06-22Yayoi: its single sign-on integration server was accessed without authorization, and Yayoi IDs and passwords of 18,364 users who set up integrations or tried to log in may have been stolen, while login tokens of 585,341 users were exposedOpen the incident

2 results

CompanyInformation and communicationsTokyo, Shinjuku[Breached][Critical]
Yayoi Co., Ltd.
Incidents 1Latest 2021-06-22
CompanyFinance and insuranceSaitama, Saitama, Urawa[Through a supplier][Major]
Saitama Resona Bank, Limited
Incidents 2Latest 2026-10-19

	Role
Yayoi Co., Ltd.	[Breached]	[Critical]	Company	Information and communications	Tokyo, Shinjuku	–	1	2021-06-22
Saitama Resona Bank, Limited	[Through a supplier]	[Major]	Company	Finance and insurance	Saitama, Saitama, Urawa	–	2	2026-10-19