> JapanHacked_Cybersecurity incidents in Japan

Company

Don Quijote Co., Ltd.

Don Quijote Co., Ltd. (Meguro, Tokyo; Wholesale and retail trade) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-10-28.

Profile

Industry/type: Wholesale and retail trade
Location: Tokyo, Meguro
Website: https://www.donki.com/

Public figures

Employees19,921Non-consolidated2026-07-22
METI: Gビズインフォ

Metric	Value	Scope	As of	Source
Employees	19,921	Non-consolidated	2026-07-22	METI: Gビズインフォ

Incident history

Disclosed 2026-10-28Updated 2026-10-28 03:11Miyazaki, Tokyo[Investigating][Severity: Major][Through a supplier][Major]
Cox: ransomware encrypted the servers of a watch repair contractor; names of customers who asked Don Quijote and group stores for repairs may have leaked
[Ransomware][Data leak]Organizations 5

		Incident	Role	Impact level				Methods	Impacts		Status
2026-10-28	2026-10-28 03:11	Cox: ransomware encrypted the servers of a watch repair contractor; names of customers who asked Don Quijote and group stores for repairs may have leaked	[Through a supplier]	[Major]	[Major]	5 Don Quijote Co., Ltd., Cox Co., Ltd., Nagasakiya Co., Ltd., Tachibana Department Store Co., Ltd., UD Retail Co., Ltd.	Miyazaki, Tokyo	[Ransomware]	[Data leak]	Unknown	[Investigating]