Worth reading
37Immaterial
0–100. This measures how worthwhile something is to read, not how good or bad the company is.Direction
Neutral
Direction inferred from the company’s description.Scale
—
Displayed only when the document provides numerical figures.Wording
Definitive
How definitive the wording is.Completion of Report on Measures to Prevent Recurrence of Information Leakage Caused by Unauthorized Access
Subject Entity
LINEヤフー株式会社
Occurrence15 July 2026 (the date the final report was submitted to and received by the Ministry of Internal Affairs and Communications and the Personal Information Protection Commission)
Same dayAwareness or receipt of notice15 July 2026 (the date the final report was received)
This disclosure07/21/2026
Cause
Information leakage caused by unauthorized access
Related procedures
Type
Final report to administrative authorities
Court or authority
Ministry of Internal Affairs and Communications, Personal Information Protection Commission
Company response
Measures to prevent recurrence
not disclosed (an overview of the measures implemented is available on a dedicated webpage)
Outlook
The company will continue working to restore trust and enable users and other stakeholders to use its services with confidence.
| Item | Details |
|---|---|
| Event name | Completion of Report on Measures to Prevent Recurrence of Information Leakage Caused by Unauthorized Access |
| Date of occurrence | 15 July 2026 (the date the final report was submitted to and received by the Ministry of Internal Affairs and Communications and the Personal Information Protection Commission) |
| Date recognized / date notice received | 15 July 2026 (the date the final report was received) |
| Subject Entity | LINEヤフー株式会社 |
| Cause | Information leakage caused by unauthorized access |
| Type of litigation or proceeding | Final report to administrative authorities |
| Court or authority | Ministry of Internal Affairs and Communications, Personal Information Protection Commission |
| Measures to prevent recurrence | not disclosed (an overview of the measures implemented is available on a dedicated webpage) |
| Outlook | The company will continue working to restore trust and enable users and other stakeholders to use its services with confidence. |
Items this document does not state (16)
Target Locations / ProductsAmount of Impact on Business PerformanceAccounting period in which recognizedImpact on Earnings ForecastPlaintiffDefendantDate of filing / date of actionClaim amount / surcharge amountAmount of receivables at risk of non-collection or delayed collectionSuspended operationsScheduled resumption dateInvestigation structureDirectors' and officers' liabilityVoting rights ownership percentage before the changeVoting rights ownership percentage after the changePlanned follow-up disclosure
These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.Measures to prevent a recurrence were formulated and implemented following the information leakage caused by unauthorized access announced on 27 November 2023.
How to read this page
This is not the documentKomori reads the disclosure the company filed and writes this summary. Figures are as stated by the company and are not audited.
Weight is not a verdictIt measures how much this changes what the company had already told the market. It is not a view on the shares.
Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.