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Organizations involved in this incident2026-10-19Ymirlink: unauthorized access to the Cuenote FC email delivery serviceOpen the incident

15 results

CompanyTransport and postal servicesAichi, Nagoya, Nakamura[Through a supplier][Critical]
Central Japan Railway Company
Incidents 3Latest 2026-10-21Employees 18,518
CompanyTransport and postal servicesFukuoka, Fukuoka, Hakata[Through a supplier][Critical]
Kyushu Railway Company
Incidents 4Latest 2026-10-21Employees 6,483
CompanyTransport and postal servicesOsaka, Osaka, Kita[Through a supplier][Critical]
West Japan Railway Company
Incidents 2Latest 2026-10-21Employees 22,524
CompanyInformation and communicationsTokyo, Shibuya[Breached][Critical]
Ymirlink, Inc.
Incidents 1Latest 2026-10-19Employees 141
CompanyManufacturingTokyo, Shinjuku[Through a supplier][Major]
Dai Nippon Printing Co., Ltd.
Incidents 1Latest 2026-10-19Employees 8,911
CompanyReal estate and rentalTokyo, Chuo[Through a supplier][Major]
Nomura Securities Co., Ltd.
Incidents 1Latest 2026-10-19Employees 13,587
CompanyInformation and communicationsTokyo, Minato[Through a supplier][Major]
istyle Inc.
Incidents 1Latest 2026-10-19Employees 591
CompanyInformation and communicationsTokyo, Minato[Through a supplier][Major]
NTTPC Communications, Inc.
Incidents 1Latest 2026-10-19Employees 650
CompanyInformation and communicationsOsaka, Osaka, Kita[Through a supplier][Major]
The Asahi Shimbun Company
Incidents 1Latest 2026-10-19
CompanyInformation and communicationsTokyo, Chuo[Through a supplier][Major]
Cybozu, Inc.
Incidents 1Latest 2026-10-19
CompanyFinance and insuranceOsaka, Osaka, Chuo[Through a supplier][Major]
Kansai Mirai Bank, Limited
Incidents 1Latest 2026-10-19
CompanyInformation and communicationsTokyo, Chiyoda[Through a supplier][Major]
The Mainichi Newspapers Co., Ltd.
Incidents 1Latest 2026-10-19
CompanyFinance and insuranceOsaka, Osaka, Chuo[Through a supplier][Major]
Resona Bank, Limited
Incidents 3Latest 2026-10-21
CompanyFinance and insuranceSaitama, Saitama, Urawa[Through a supplier][Major]
Saitama Resona Bank, Limited
Incidents 1Latest 2026-10-19
CompanyInformation and communicationsTokyo, Minato[Through a supplier][Major]
ValueCommerce Co., Ltd.
Incidents 1Latest 2026-10-19

	Role
Central Japan Railway Company	[Through a supplier]	[Critical]	Company	Transport and postal services	Aichi, Nagoya, Nakamura	18,518	–	3	2026-10-21
Kyushu Railway Company	[Through a supplier]	[Critical]	Company	Transport and postal services	Fukuoka, Fukuoka, Hakata	6,483	–	4	2026-10-21
West Japan Railway Company	[Through a supplier]	[Critical]	Company	Transport and postal services	Osaka, Osaka, Kita	22,524	–	2	2026-10-21
Ymirlink, Inc.	[Breached]	[Critical]	Company	Information and communications	Tokyo, Shibuya	141	–	1	2026-10-19
Dai Nippon Printing Co., Ltd.	[Through a supplier]	[Major]	Company	Manufacturing	Tokyo, Shinjuku	8,911	–	1	2026-10-19
Nomura Securities Co., Ltd.	[Through a supplier]	[Major]	Company	Real estate and rental	Tokyo, Chuo	13,587	–	1	2026-10-19
istyle Inc.	[Through a supplier]	[Major]	Company	Information and communications	Tokyo, Minato	591	–	1	2026-10-19
NTTPC Communications, Inc.	[Through a supplier]	[Major]	Company	Information and communications	Tokyo, Minato	650	–	1	2026-10-19
The Asahi Shimbun Company	[Through a supplier]	[Major]	Company	Information and communications	Osaka, Osaka, Kita	–	–	1	2026-10-19
Cybozu, Inc.	[Through a supplier]	[Major]	Company	Information and communications	Tokyo, Chuo	–	–	1	2026-10-19
Kansai Mirai Bank, Limited	[Through a supplier]	[Major]	Company	Finance and insurance	Osaka, Osaka, Chuo	–	–	1	2026-10-19
The Mainichi Newspapers Co., Ltd.	[Through a supplier]	[Major]	Company	Information and communications	Tokyo, Chiyoda	–	–	1	2026-10-19
Resona Bank, Limited	[Through a supplier]	[Major]	Company	Finance and insurance	Osaka, Osaka, Chuo	–	–	3	2026-10-21
Saitama Resona Bank, Limited	[Through a supplier]	[Major]	Company	Finance and insurance	Saitama, Saitama, Urawa	–	–	1	2026-10-19
ValueCommerce Co., Ltd.	[Through a supplier]	[Major]	Company	Information and communications	Tokyo, Minato	–	–	1	2026-10-19