> JapanHacked_Cybersecurity incidents in Japan

Company

Johnan Shingaku Kenkyusha Co., Ltd.

Johnan Shingaku Kenkyusha Co., Ltd. (Kawasaki, Kawasaki, Kanagawa; Education and learning support) appears in 1 related cybersecurity incident. The latest was disclosed on 2020-07-16.

Profile

Industry/type: Education and learning support
Location: Kanagawa, Kawasaki, Kawasaki
Listing: TSE Standard 4720
Website: https://www.johnan.co.jp/

Public figures

Employees425Non-consolidated2025-04-21
METI: Gビズインフォ

Metric	Value	Scope	As of	Source
Employees	425	Non-consolidated	2025-04-21	METI: Gビズインフォ

Incident history

Disclosed 2020-07-16Updated 2020-07-20 08:00Kanagawa[Resolved][Severity: Major][Breached][Major]
Johnan Shingaku Kenkyusha: an attack on the server behind its cram school sites may have leaked 34,263 enquiry records
[Intrusion][Data leak][Service outage]Leaked 34.3KOrganizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2020-07-16	2020-07-20 08:00	Johnan Shingaku Kenkyusha: an attack on the server behind its cram school sites may have leaked 34,263 enquiry records	[Breached]	[Major]	[Major]	1 Johnan Shingaku Kenkyusha Co., Ltd.	Kanagawa	[Intrusion]	[Data leak][Service outage]	34,263	[Resolved]