Enforcement record
指導 disclosure naming LINEヤフー株式会社
This page records one action from a Japanese government disclosure, including the published name, governing law, authority, action details, and official source.
Action type
指導
Law
Telecommunications Business Act
Authority
Ministry of Internal Affairs and Communications
Action date
31 July 2026
Current page: Enforcement record
This screen focuses on one disclosed action: the published name, governing law, authority, facts, source status, and review evidence.
Source verification
Public-source and preservation status
- Publishing authority
- Ministry of Internal Affairs and Communications
- Official source URL
- Recorded by RegBase
- Entity match
- Not confirmed; shown under the published name
- Kiroku preservation
- Queued for preservation
- Captured: Jul 31, 2026, 09:01 PM JST
“Confirmed” means that RegBase matched this record to the cited public disclosure or entity under the stated checks. It does not verify the truth of the disclosure or guarantee the entity’s current status, creditworthiness, or any legal conclusion.
Available sources and saved files are listed in the public documents section below.
Public documents and saved materials
View the original publications, see what was preserved, or download each file below.
Loading materials…
Action summary
- Company
- LINEヤフー株式会社Japanese onlyOriginal: LINEヤフー株式会社
- Governing law
- Telecommunications Business Act電気通信事業法
- Action type
- 指導指導
- Action date
- 31 July 2026
- Issuing authority
- Ministry of Internal Affairs and Communications総務省
- Industry context
- 電気通信事業
Violation
In relation to an incident involving the leakage of specific user information, the Ministry of Internal Affairs and Communications conducted administrative guidance to LINE Yahoo Corporation. The guidance emphasized ensuring proper management of specific user information and adherence to external transmission regulations, and required reporting on the implementation of preventive measures. Treenod Inc., which develops and operates the LINE Game app provided by LINE Yahoo Corporation, transmitted user identifiers (such as MID) to a third-party data analysis company without approval or notification, for advertising analysis purposes. This resulted in approximately 8.03 million leaks over about four years, including approximately 7.52 million within Japan.
Show original Japanese text
LINEヤフー社が提供する「LINEゲーム」アプリの開発及び運用を担うTreenod Inc.が、当該アプリの広告分析に用いる目的で、LINEヤフー社の承認を得ず、かつ、利用者に通知等なく、特定利用者情報である利用者識別子（MID）等を、利用者端末から第三者である情報分析サービス会社に送信し、約4年間にわたり約803万件（うち日本国内利用者分は約752万件）を漏えいさせていた。
Business location and permit details
- Representative
- 出澤 剛
These fields are extracted from the original Japanese disclosure or linked overview pages when available.
Compliance context
Context neededThis is a public Japanese regulatory disclosure. The exact legal effect depends on the cited source and regulator.
Telecommunications law governing telecommunications services and related user protection obligations.
Review the original Japanese source and determine relevance to your counterparty-risk workflow.
This context is an operational aid for review workflows, not a credit opinion or legal conclusion.
Language
日本語版を見る (Japanese)About this recordAggregated and translated from public Japanese government disclosures. The English text is for reference only — authoritative content is the linked Japanese source.