> JapanHacked_Cybersecurity incidents in Japan

Company

Watami Co., Ltd.

Watami Co., Ltd. (Ota-ku, Tokyo, Tokyo; Accommodation, food and drink) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-10-24.

Profile

Industry/type: Accommodation, food and drink
Location: Tokyo, Tokyo, Ota-ku
Website: https://www.watami.co.jp/

Public figures

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Metric	Value	Scope	As of	Source
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Incident history

Disclosed 2026-10-24Updated 2026-10-29 23:45Fukushima, Gunma, Kyoto, Niigata, Shizuoka, Tokyo[Investigating][Severity: Critical][Through a supplier][Major]
IGREKS: unauthorized access to the Y-mail email delivery service
[Intrusion][Credential abuse][Data leak][Service outage]Organizations 8

		Incident	Role	Impact level				Methods	Impacts		Status
2026-10-24	2026-10-29 23:45	IGREKS: unauthorized access to the Y-mail email delivery service	[Through a supplier]	[Major]	[Critical]	8 IGREKS Inc., Daito Kaihatsu Co., Ltd., Dynamico Inc., Futaba Town, Minamiuonuma City, Watami Co., Ltd., Kyoto Industrial Support Organization 21, Motoya Co., Ltd.	Fukushima, Gunma, Kyoto, Niigata, Shizuoka, Tokyo	[Intrusion][Credential abuse]	[Data leak][Service outage]	Unknown	[Investigating]