> JapanHacked_Cybersecurity incidents in Japan

Company

Medicus Shuppan, Publishers Co., Ltd.

Medicus Shuppan, Publishers Co., Ltd. (Yodogawa, Osaka, Osaka; Information and communications) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-03-17.

Profile

Industry/type: Information and communications
Location: Osaka, Osaka, Yodogawa
Website: https://www.medica.co.jp/

Public figures

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Metric	Value		As of	Source
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Incident history

Disclosed 2026-03-17Updated 2026-10-23Osaka[Contained][Severity: Critical][Breached][Critical]
Medicus Shuppan, Publishers: ransomware attack
[Ransomware][Credential abuse][Data leak][Service outage]Leaked 772KOrganizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2026-03-17	2026-10-23	Medicus Shuppan, Publishers: ransomware attack	[Breached]	[Critical]	[Critical]	1 Medicus Shuppan, Publishers Co., Ltd.	Osaka	[Ransomware][Credential abuse]	[Data leak][Service outage]	772,000	[Contained]