Company

Matsuzawa Shoten Inc.

Matsuzawa Shoten Inc. (Itabashi, Tokyo; Wholesale and retail trade) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-05-09.

Profile

Industry/type

Wholesale and retail trade

Location

Tokyo, Itabashi

Services

Chumon-kun
Gakufu Navi

Website

https://www.corp.musenet.co.jp/

Public figures

–

Metric	Value		As of	Source
–

Incident history

Disclosed 2026-05-09Updated 2026-10-22Tokyo[Contained][Severity: Critical][Breached][Critical]
Matsuzawa Shoten: ransomware attack
[Ransomware][Service outage]Organizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2026-05-09	2026-10-22	Matsuzawa Shoten: ransomware attack	[Breached]	[Critical]	[Critical]	1 Matsuzawa Shoten Inc.	Tokyo	[Ransomware]	[Service outage]	Unknown	[Contained]