> JapanHacked_Cybersecurity incidents in Japan

Company

TV Asahi Mediaplex Inc.

TV Asahi Mediaplex Inc. (Minato, Tokyo; Information and communications) appears in 1 related cybersecurity incident. The latest was disclosed on 2026-07-03.

Profile

Industry/type: Information and communications
Location: Tokyo, Minato
Website: https://www.mediaplex.co.jp/

Public figures

Employees107Non-consolidated2026-10-05
METI: Gビズインフォ

Metric	Value	Scope	As of	Source
Employees	107	Non-consolidated	2026-10-05	METI: Gビズインフォ

Incident history

Disclosed 2026-07-03Updated 2026-08-17 08:05Tokyo[Contained][Severity: Major][Breached][Major]
TV Asahi Mediaplex: unauthorized access to a server may have leaked 4,543 personal data records of employees, applicants and individual business partners, including My Number
[Intrusion][Credential abuse][Data leak]Leaked 4.5KOrganizations 1

		Incident	Role	Impact level				Methods	Impacts		Status
2026-07-03	2026-08-17 08:05	TV Asahi Mediaplex: unauthorized access to a server may have leaked 4,543 personal data records of employees, applicants and individual business partners, including My Number	[Breached]	[Major]	[Major]	1 TV Asahi Mediaplex Inc.	Tokyo	[Intrusion][Credential abuse]	[Data leak]	4,543	[Contained]