> JapanHacked_Cybersecurity incidents in Japan

Company

Gakuyu Publishing Co., Ltd.

Gakuyu Publishing Co., Ltd. (Chikusa-ku, Nagoya, Aichi; Information and communications) appears in 1 related cybersecurity incident. The latest was disclosed on 2025-06-30.

Profile

Industry/type: Information and communications
Location: Aichi, Nagoya, Chikusa-ku

Public figures

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Metric	Value	Scope	As of	Source
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Incident history

Disclosed 2025-06-30Updated 2025-07-10 08:05Aichi[Contained][Severity: Critical][Breached][Critical]
Gakuyu Publishing: SQL injection on the Aichi Zenken mock exam site may have leaked about 282,000 examinee records
[Web app exploit][Data leak]Organizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2025-06-30	2025-07-10 08:05	Gakuyu Publishing: SQL injection on the Aichi Zenken mock exam site may have leaked about 282,000 examinee records	[Breached]	[Critical]	[Critical]	1 Gakuyu Publishing Co., Ltd.	Aichi	[Web app exploit]	[Data leak]	Unknown	[Contained]