> JapanHacked_Cybersecurity incidents in Japan

Company

Okayama Gas Co., Ltd.

Okayama Gas Co., Ltd. (Naka, Okayama, Okayama; Electricity, gas, heat and water) appears in 1 related cybersecurity incident. The latest was disclosed on 2024-07-17.

Profile

Industry/type: Electricity, gas, heat and water
Location: Okayama, Okayama, Naka
Website: https://www.okagas.co.jp/

Public figures

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Metric	Value		As of	Source
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Incident history

Disclosed 2024-07-17Updated 2026-10-23Chiba, Kanagawa, Okayama, Tokyo[Contained][Severity: Critical][Through a supplier][Critical]
Tokyo Gas Engineering Solutions: intrusion may have exposed personal data of about 4.16 million people
[Intrusion][Data leak]Leaked 4.2MOrganizations 5

		Incident	Role	Impact level				Methods	Impacts		Status
2024-07-17	2026-10-23	Tokyo Gas Engineering Solutions: intrusion may have exposed personal data of about 4.16 million people	[Through a supplier]	[Critical]	[Critical]	5 Keiyo Gas Co., Ltd., Okayama Gas Co., Ltd., Tokyo Gas Engineering Solutions Corporation, Kanagawa Prefecture, Tokyo Gas Co., Ltd.	Chiba, Kanagawa, Okayama, Tokyo	[Intrusion]	[Data leak]	4,160,000	[Contained]