> JapanHacked_Cybersecurity incidents in Japan

Company

Mitsuuroko Vessel Co., Ltd.

Mitsuuroko Vessel Co., Ltd. (Chuo, Tokyo; Wholesale and retail trade) appears in 1 related cybersecurity incident. The latest was disclosed on 2021-08-19.

Profile

Industry/type: Wholesale and retail trade
Location: Tokyo, Chuo

Public figures

Employees577Non-consolidated2025-12-08
METI: Gビズインフォ

Metric	Value	Scope	As of	Source
Employees	577	Non-consolidated	2025-12-08	METI: Gビズインフォ

Incident history

Disclosed 2021-08-19Updated 2021-08-27 08:00Tokyo[Resolved][Severity: Major][Breached][Major]
Mitsuuroko Vessel: customer data of 5,259 Mitsuuroko Hikari subscribers, used to check billing statements, was mistakenly sent to one corporate client
[Misdelivery][Data leak]Organizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2021-08-19	2021-08-27 08:00	Mitsuuroko Vessel: customer data of 5,259 Mitsuuroko Hikari subscribers, used to check billing statements, was mistakenly sent to one corporate client	[Breached]	[Major]	[Major]	1 Mitsuuroko Vessel Co., Ltd.	Tokyo	[Misdelivery]	[Data leak]	Unknown	[Resolved]