> JapanHacked_Cybersecurity incidents in Japan

Company

JR East Marketing & Communications, Inc.

JR East Marketing & Communications, Inc. (Shibuya, Tokyo; Scientific research, professional and technical services) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-10-26.

Profile

Industry/type: Scientific research, professional and technical services
Location: Tokyo, Shibuya
Website: https://www.jeki.co.jp/

Public figures

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Metric	Value	Scope	As of	Source
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Incident history

Disclosed 2026-10-26Updated 2026-11-03 11:48Gifu, Ibaraki, Kumamoto, Miyazaki, Tokyo[Contained][Severity: Critical][Through a supplier][Major]
palan: intrusion through a data-analysis tool leaks data on up to 33,348 users, campaign participants and inquirers
[Web app exploit][Data leak]Leaked 33.3KOrganizations 12

		Incident	Role	Impact level				Methods	Impacts		Status
2026-10-26	2026-11-03 11:48	palan: intrusion through a data-analysis tool leaks data on up to 33,348 users, campaign participants and inquirers	[Through a supplier]	[Major]	[Critical]	12 Fuchu City (Tokyo), palan Inc., Gifu Prefecture, Ibaraki Prefectural Government, JTB Corp., Kumamoto Prefecture, Miyazaki Prefecture, TOPPAN Inc., Kumamoto City, Gifu Shimbun Inc., JR East Marketing & Communications, Inc., JTB Publishing, Inc.	Gifu, Ibaraki, Kumamoto, Miyazaki, Tokyo	[Web app exploit]	[Data leak]	33,348	[Contained]