Personal information breach caused by unauthorized access by a third party to the Matsuya Official App (Matsuben Net, Mobile Ordering and Matsuben Delivery) management system
MATSUYA FOODS HOLDINGS CO.,LTD. (filing company)
The management system for the Matsuya Official App (Matsuben Net, Mobile Ordering and Matsuben Delivery)
Unauthorized access by a third party. Details of the cause and how the unauthorized access became possible remain under investigation.
Company response
Use of the Matsuya Official App (during the suspension period)
The company is working toward an early recovery, but the specific planned resumption date is Not disclosed.
The company is responding with the cooperation of the relevant companies and other parties. The establishment of a third-party committee, special investigation committee or similar body is Not disclosed.
Related procedures
Report to the Personal Information Protection Commission
Personal Information Protection Commission
The company will work toward early recovery of the system. It will proceed with necessary measures, including reporting to the Personal Information Protection Commission, contact customers whose information was leaked in stages, and plans to provide compensation to app members during the suspension period.
Further details are scheduled to be announced separately, but the timing is Not disclosed.
| Item | Details |
|---|---|
| Event name | Personal information breach caused by unauthorized access by a third party to the Matsuya Official App (Matsuben Net, Mobile Ordering and Matsuben Delivery) management system |
| Date of occurrence | 28 October 2026 (the date on which unauthorized access was identified and the breach was discovered; the actual date of access is Not disclosed) |
| Date recognized / date notice received | 28 October 2026 (breach discovered) |
| Subject Entity | MATSUYA FOODS HOLDINGS CO.,LTD. (filing company) |
| Target Locations / Products | The management system for the Matsuya Official App (Matsuben Net, Mobile Ordering and Matsuben Delivery) |
| Cause | Unauthorized access by a third party. Details of the cause and how the unauthorized access became possible remain under investigation. |
| Type of litigation or proceeding | Report to the Personal Information Protection Commission |
| Court or authority | Personal Information Protection Commission |
| Suspended operations | Use of the Matsuya Official App (during the suspension period) |
| Scheduled resumption date | The company is working toward an early recovery, but the specific planned resumption date is Not disclosed. |
| Investigation structure | The company is responding with the cooperation of the relevant companies and other parties. The establishment of a third-party committee, special investigation committee or similar body is Not disclosed. |
| Outlook | The company will work toward early recovery of the system. It will proceed with necessary measures, including reporting to the Personal Information Protection Commission, contact customers whose information was leaked in stages, and plans to provide compensation to app members during the suspension period. |
| Planned follow-up disclosure | Further details are scheduled to be announced separately, but the timing is Not disclosed. |
Items this document does not state (12)
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.Unauthorized access by a third party has been confirmed, but details of the cause and how the unauthorized access became possible remain under investigation.