Company

Kodansha Ltd.

Kodansha Ltd. (Bunkyo, Tokyo; Information and communications) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-08-03.

Profile

Industry/type

Information and communications

Location

Tokyo, Bunkyo

Website

https://www.kodansha.co.jp/

Group companies

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Metric	Value		As of	Source
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		Incident	Role	Impact level				Methods	Impacts		Status
2026-08-03	2026-10-22	Kodansha: unauthorized access to a company email account	[Breached]	[Major]	[Major]	1 Kodansha Ltd.	Tokyo	[Phishing][Credential abuse]	[Data leak]	3,812	[Contained]