> JapanHacked_Cybersecurity incidents in Japan

Company

Eisai Co., Ltd.

Eisai Co., Ltd. (Bunkyo, Tokyo; Manufacturing) appears in 2 related cybersecurity incidents. The latest was disclosed on 2023-06-06.

Profile

Industry/type: Manufacturing
Location: Tokyo, Bunkyo
Listing: TSE Prime 4523
Website: https://www.eisai.co.jp/

Public figures

Employees2,979Non-consolidated2024-04-19
METI: Gビズインフォ

Metric	Value	Scope	As of	Source
Employees	2,979	Non-consolidated	2024-04-19	METI: Gビズインフォ

Incident history

Disclosed 2023-06-06Updated 2023-06-08 08:05Tokyo[Investigating][Severity: Major][Breached][Major]
Eisai: several group servers were encrypted by ransomware and it disconnected systems including logistics
[Ransomware][Service outage]Organizations 1
Disclosed 2023-05-19Updated 2023-05-26 08:05Tokyo[Contained][Severity: Major][Breached][Major]
Eisai: an overseas employee account was misused and information on business partner contacts on the group cloud platform may have leaked
[Credential abuse][Data leak]Organizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2023-06-06	2023-06-08 08:05	Eisai: several group servers were encrypted by ransomware and it disconnected systems including logistics	[Breached]	[Major]	[Major]	1 Eisai Co., Ltd.	Tokyo	[Ransomware]	[Service outage]	Unknown	[Investigating]
2023-05-19	2023-05-26 08:05	Eisai: an overseas employee account was misused and information on business partner contacts on the group cloud platform may have leaked	[Breached]	[Major]	[Major]	1 Eisai Co., Ltd.	Tokyo	[Credential abuse]	[Data leak]	Unknown	[Contained]