> JapanHacked_Cybersecurity incidents in Japan

Company

Marui Group Co., Ltd.

Marui Group Co., Ltd. (Nakano, Tokyo; Wholesale and retail trade) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-10-31 07:37.

Profile

Industry/type: Wholesale and retail trade
Location: Tokyo, Nakano
Also known as: Marui Group
Listing: TSE Prime 8252
Website: https://www.0101maruigroup.co.jp/

Public figures

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Metric	Value	Scope	As of	Source
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Incident history

Disclosed 2026-10-31 07:37Updated 2026-11-02 18:00Aichi, Osaka, Tokyo[Investigating][Severity: Critical][Through a supplier][Critical]
Securitize Japan: platform breach leaks investor data, including up to 9,086 Marui applicants
[Web app exploit][Data leak]Leaked 9.1KOrganizations 12

		Incident	Role	Impact level				Methods	Impacts		Status
2026-10-31 07:37	2026-11-02 18:00	Securitize Japan: platform breach leaks investor data, including up to 9,086 Marui applicants	[Through a supplier]	[Critical]	[Critical]	12 NTT DATA Japan Corporation, Marui Group Co., Ltd., Securitize Japan K.K., Nomura Securities Co., Ltd., West Japan Railway Company, SBI SECURITIES Co., Ltd., KAGOME CO., LTD., Kintetsu Group Holdings Co., Ltd., Mitsubishi UFJ Morgan Stanley Securities Co., Ltd., Rakuten Securities, Inc., Starts Securities Co., Ltd., Pan Pacific International Holdings Corporation	Aichi, Osaka, Tokyo	[Web app exploit]	[Data leak]	9,086	[Investigating]