Nonprofit

U Co-op

U Co-op (Naka, Yokohama, Kanagawa; Wholesale and retail trade) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-10-29.

Profile

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Metric	Value	Scope	As of	Source
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		Incident	Role	Impact level				Methods	Impacts		Status
2026-10-29	2026-11-02 20:32	Arara: Arara Message breach exposes about 77 million email addresses; count under review	[Through a supplier]	[Critical]	[Critical]	380 Arara Inc., Hokuriku Electric Power Company, TKC Corporation, U Co-op, Suzuki Motor Corporation, The Kagoshima Bank, Ltd., Kagoshima Shinkin Bank, Kagoshima Sogo Shinkin Bank, The Minami-Nippon Bank, Ltd.	Kagoshima, Kanagawa, Shizuoka, Tochigi, Tokyo, Toyama	[Web app exploit]	[Data leak][Service outage]	77,000,000	[Investigating]