> JapanHacked_Cybersecurity incidents in Japan

Company

Katayama Shoji Co., Ltd.

Katayama Shoji Co., Ltd. (Higashi-ku, Niigata, Niigata; Wholesale and retail trade) appears in 1 related cybersecurity incident. The latest was disclosed on 2025-10-22.

Profile

Industry/type: Wholesale and retail trade
Location: Niigata, Niigata, Higashi-ku
Website: https://www.katayamashoji.co.jp/

Public figures

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Metric	Value	Scope	As of	Source
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Incident history

Disclosed 2025-10-22Updated 2025-11-10 08:05Niigata[Resolved][Severity: Critical][Breached][Critical]
Katayama Shoji: the payment application of the "Nature Katayama Online Store" was tampered with, leaking 1,049 card records
[Web app exploit][Data leak]Leaked 1KOrganizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2025-10-22	2025-11-10 08:05	Katayama Shoji: the payment application of the "Nature Katayama Online Store" was tampered with, leaking 1,049 card records	[Breached]	[Critical]	[Critical]	1 Katayama Shoji Co., Ltd.	Niigata	[Web app exploit]	[Data leak]	1,049	[Resolved]