Potential leakage of personal information due to unauthorized access at a consolidated subsidiary
株式会社ティンパンアレイ (our consolidated subsidiary)
The business servers of ティンパンアレイ and some related internal business systems
Unauthorized access by a third party from outside (infiltration of the server and operations to extract data)
Company response
Some related internal business systems suspended
An investigation will be commissioned from external security experts and others.
We will implement the necessary measures to prevent recurrence based on the investigation results and advice from experts and others.
Current period
The impact on results is currently under review. If any matters requiring disclosure are identified, they will be announced promptly.
Related procedures
Consultation with the police and a report to the Personal Information Protection Commission
Police and the Personal Information Protection Commission
We will commission an investigation from external security experts and others and implement the necessary measures to prevent recurrence based on the investigation results and advice from experts and others. We will also issue an apology and alert members through a notice on our website and individual emails to members.
If any matters requiring disclosure are identified, they will be announced promptly. Further guidance will be provided as soon as preparations are complete.
| Item | Details |
|---|---|
| Event name | Potential leakage of personal information due to unauthorized access at a consolidated subsidiary |
| Date of occurrence | Around 14:51 on Saturday, 17 October 2026 (unauthorized access occurred) |
| Date recognized / date notice received | Around 12:08 on Wednesday, 28 October 2026 (unauthorized operations detected) |
| Subject Entity | 株式会社ティンパンアレイ (our consolidated subsidiary) |
| Target Locations / Products | The business servers of ティンパンアレイ and some related internal business systems |
| Cause | Unauthorized access by a third party from outside (infiltration of the server and operations to extract data) |
| Accounting period in which recognized | Current period |
| Impact on Earnings Forecast | The impact on results is currently under review. If any matters requiring disclosure are identified, they will be announced promptly. |
| Type of litigation or proceeding | Consultation with the police and a report to the Personal Information Protection Commission |
| Court or authority | Police and the Personal Information Protection Commission |
| Suspended operations | Some related internal business systems suspended |
| Investigation structure | An investigation will be commissioned from external security experts and others. |
| Measures to prevent recurrence | We will implement the necessary measures to prevent recurrence based on the investigation results and advice from experts and others. |
| Outlook | We will commission an investigation from external security experts and others and implement the necessary measures to prevent recurrence based on the investigation results and advice from experts and others. We will also issue an apology and alert members through a notice on our website and individual emails to members. |
| Planned follow-up disclosure | If any matters requiring disclosure are identified, they will be announced promptly. Further guidance will be provided as soon as preparations are complete. |
Items this document does not state (10)
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.Because a third party gained unauthorized access externally, infiltrated the server and performed operations to extract data.