Apology and Notice Regarding a System Failure Caused by Unauthorized Access (Second Report)
Joshin Corporation
Member information database server, Joshin subscription service, home renovation photo upload system
Unauthorized access by a third party
Company response
Provision of certain services. The specific services and scope have not been clearly identified, including the Joshin subscription service and home renovation photo upload system.
Investigating the details of the unauthorized access and the scope of its impact in cooperation with external specialist organisations
Promptly addressing security vulnerabilities, which have become a new social issue; conducting investigations to prevent recurrence; and further strengthening security
Related procedures
Consultation with and reporting to the Personal Information Protection Commission and the police
Personal Information Protection Commission and police
Continuing a comprehensive investigation into the details of the unauthorized access, the scope of its impact and whether information leakage occurred, and taking steps toward the early resumption of the suspended services
If any new facts requiring disclosure are identified, the company will promptly announce them through its official website and other channels.
| Item | Details |
|---|---|
| Event name | Apology and Notice Regarding a System Failure Caused by Unauthorized Access (Second Report) |
| Date of occurrence | 16 October 2026 (the date on which an abnormality in the company’s network was detected and evidence of unauthorized access was confirmed) |
| Date recognized / date notice received | 16 October 2026 (the date on which an abnormality in the company’s network was detected). The dates of consultation with or reports to the Personal Information Protection Commission and the police are not specified. |
| Subject Entity | Joshin Corporation |
| Target Locations / Products | Member information database server, Joshin subscription service, home renovation photo upload system |
| Cause | Unauthorized access by a third party |
| Type of litigation or proceeding | Consultation with and reporting to the Personal Information Protection Commission and the police |
| Court or authority | Personal Information Protection Commission and police |
| Suspended operations | Provision of certain services. The specific services and scope have not been clearly identified, including the Joshin subscription service and home renovation photo upload system. |
| Investigation structure | Investigating the details of the unauthorized access and the scope of its impact in cooperation with external specialist organisations |
| Measures to prevent recurrence | Promptly addressing security vulnerabilities, which have become a new social issue; conducting investigations to prevent recurrence; and further strengthening security |
| Outlook | Continuing a comprehensive investigation into the details of the unauthorized access, the scope of its impact and whether information leakage occurred, and taking steps toward the early resumption of the suspended services |
| Planned follow-up disclosure | If any new facts requiring disclosure are identified, the company will promptly announce them through its official website and other channels. |
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.Part of the network was affected by unauthorized access by a third party. As an emergency measure, the relevant servers were isolated, leaving some services unavailable.