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
RegBase evidence report
Japanese public-record enforcement check
Saveable record of the published action, regulator source, source status, and review notes for internal compliance files.
- Report ID
- RB-EN-ENFORCEMENT-DENKI-TSUSHINHO-L-202608012022
- Generated at
- 2 August 2026 at 05:22
- Record URL
- https://regbase.jp/en/enforcement/denki-tsushinho-lineyahu-20260731
1. Review Summary
| Disclosure name | LINEヤフー株式会社 | Corporate Number | Not stated in the disclosure |
|---|---|---|---|
| Enforcement record | 1 record | Other confirmed records for this company | Outside this report's scope |
| Action date | 31 July 2026 | Authority | Ministry of Internal Affairs and Communications |
| Law | Telecommunications Business Act | Action type | 指導 |
| Source status | Preserved public-source archive recorded | ||
This report summarizes public Japanese government disclosure data held by RegBase. It is not a credit score, sanctions conclusion, legal opinion, or adverse-media determination. Confirm important decisions against the linked official Japanese source.
2. Published Information
| Published name | LINEヤフー株式会社 |
|---|
3. Enforcement Record
| Target name in disclosure | LINEヤフー株式会社 |
|---|---|
| Authority | Ministry of Internal Affairs and Communications (総務省) |
| Law / action type | Telecommunications Business Act / 指導 |
| Action / announcement date | Action: 31 July 2026 / Announcement: 31 July 2026 |
| English summary | 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. |
| 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。 |
| Official source | https://www.soumu.go.jp/menu_news/s-news/01kiban18_01000286.html |
| Source archive | https://kiroku.today/a/58350a111e0ef498 |
| Extraction / evidence timestamps | Extracted: 31 July 2026 at 21:01 / Evidence checked: 31 July 2026 at 21:01 / Archive captured: 31 July 2026 at 21:01 |
4. Business Location and Permit Details
| Representative | 出澤 剛 |
|---|
5. Other Confirmed Records for This Company
This report covers the single government disclosure shown on this page.
Reviewer Notes
| Reviewer | Team / company | ||
|---|---|---|---|
| Review purpose | |||
| Additional notes | |||
- □ Official source URL or archived source was checked.
- □ Corporate Number, address, or other identifiers were reviewed to avoid confusing similarly named entities.
- □ This document is understood as a public-record evidence file, not a credit decision or legal opinion.
Current page: Enforcement record
This screen focuses on one disclosed action: the published name, governing law, authority, facts, source status, and review evidence.
Free report
Save the disclosure record naming LINEヤフー株式会社
Includes the published name, regulator, governing law, source links, archive status, and reviewer note fields for internal due-diligence files.
Preserved evidence by Kiroku
Review the preserved source for LINEヤフー株式会社
Open the preserved public source with its capture time, original artifact, available verification data, and downloadable evidence pack.
For developers: JSON integration details
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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.
Evidence pack
- Extracted at
- 2026-07-31T12:01:28.733+00:00
- Evidence checked
- 2026-07-31T12:01:28.677+00:00
- Archive captured
- 2026-07-31T12:01:41.738929+00:00
Show audit JSON
{
"record": {
"id": "73c801a6-0544-4f76-b64d-e81f5f763477",
"url": "https://regbase.jp/en/enforcement/denki-tsushinho-lineyahu-20260731",
"company_name_original": "LINEヤフー株式会社",
"company_name_registry": null,
"corporate_number": null,
"law": {
"ja": "電気通信事業法",
"en": "Telecommunications Business Act"
},
"action_type": {
"ja": "指導",
"en": "指導"
},
"authority": {
"ja": "総務省",
"en": "Ministry of Internal Affairs and Communications"
}
},
"entity_match": {
"status": "unresolved",
"confidence": 88,
"method": "nta_historical_strict_name_nationally_unique",
"method_label": "nta_historical_strict_name_nationally_unique",
"notes": "有力な法人候補がありますが、自動確定に必要な独立証拠が不足しています（nta_historical_strict_name_nationally_unique）。"
},
"review": {
"status": "needs_review",
"label": "Needs review"
},
"compliance_context": {
"severity": "Context needed",
"actionMeaning": "This is a public Japanese regulatory disclosure. The exact legal effect depends on the cited source and regulator.",
"practicalNote": "Review the original Japanese source and determine relevance to your counterparty-risk workflow.",
"lawContext": "Telecommunications law governing telecommunications services and related user protection obligations."
},
"evidence": {
"recordUrl": "https://regbase.jp/en/enforcement/denki-tsushinho-lineyahu-20260731",
"officialSourceUrl": "https://www.soumu.go.jp/menu_news/s-news/01kiban18_01000286.html",
"officialDocumentUrl": null,
"archiveUrl": "https://kiroku.today/a/58350a111e0ef498",
"archivedSourceUrl": "https://www.soumu.go.jp/menu_news/s-news/01kiban18_01000286.html",
"archiveCapturedAt": "2026-07-31T12:01:41.738929+00:00",
"extractedAt": "2026-07-31T12:01:28.733+00:00",
"translatedAt": "2026-07-31T12:11:07.285+00:00",
"evidenceCheckedAt": "2026-07-31T12:01:28.677+00:00",
"generatedAt": "2026-08-01T20:22:03.382Z"
},
"limitations": [
"RegBase aggregates public Japanese government disclosures and does not provide a credit opinion.",
"English summaries are provided for reference. The original Japanese source is authoritative.",
"Possible or unresolved entity matches should be manually verified before use in a decision."
]
}The original Japanese disclosure is the authoritative record. Use possible or unresolved matches only as leads for manual review.
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.