Company

Nippon Gas Co., Ltd.

Nippon Gas Co., Ltd. (Shibuya, Tokyo; Electricity, gas, heat and water) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-10-23.

Profile

Industry/type

Electricity, gas, heat and water

Location

Tokyo, Shibuya

Services

My Nichigas

Listing

TSE Prime 8174

Website

https://www.nichigas.co.jp/

Public figures

Employees1,165Non-consolidated2026-03-31
METI: Gビズインフォ
Revenue¥193.8BNon-consolidated2026-03-31
METI: Gビズインフォ
Capital¥7.1BNon-consolidated2026-03-31
METI: Gビズインフォ

Metric	Value		As of	Source
Employees	1,165	Non-consolidated	2026-03-31	METI: Gビズインフォ
Revenue	¥193.8B	Non-consolidated	2026-03-31	METI: Gビズインフォ
Capital	¥7.1B	Non-consolidated	2026-03-31	METI: Gビズインフォ

Incident history

Disclosed 2026-10-23Updated 2026-10-23Tokyo[Contained][Severity: Major][Breached][Major]
Nippon Gas: unauthorized access to the My Nichigas sign-up system
[API abuse][Data leak]Leaked 85Organizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2026-10-23	2026-10-23	Nippon Gas: unauthorized access to the My Nichigas sign-up system	[Breached]	[Major]	[Major]	1 Nippon Gas Co., Ltd.	Tokyo	[API abuse]	[Data leak]	85	[Contained]