Leakage of personal information due to unauthorized access to our contractor’s email distribution service
HASEGAWA CO.,LTD., アララ株式会社
The server for アララ株式会社's repica email delivery system and emails sent by the Company
Unauthorized access by a third party to the repica server
No impact on business performance. Amount: Not disclosed
The event occurred after the end of the consolidated accounting period for the second quarter of the fiscal year ending March 2027 and had no impact on performance for that period.
The event has not been incorporated into the full-year consolidated earnings forecast for the fiscal year ending March 2027. If a revision to the earnings forecast or any other matter requiring disclosure arises, it will be reported promptly.
Company response
Fully suspended email delivery through the email delivery server on which unauthorized access was confirmed
The planned resumption date is Not disclosed. Migration to a separate email delivery platform with adequate security measures is under way.
Email delivery through the affected email delivery server has already been fully suspended / Migration to a separate email delivery platform with adequate security measures will be pursued / Monitoring and reassessment of the information security framework, including that of service providers, will be strengthened / The report to the Personal Information Protection Commission will be submitted appropriately in coordination with アララ株式会社
Related procedures
Report to the Personal Information Protection Commission
Personal Information Protection Commission
Migration to a separate email delivery platform, strengthened monitoring and reassessment of the information security framework, including that of service providers, and submission of a report to the Personal Information Protection Commission will be pursued. Individual notifications were sent to the 305 affected recipients on 5 November 2026.
If a revision to the earnings forecast or any other matter requiring disclosure arises, it will be reported promptly.
| Item | Details |
|---|---|
| Event name | Leakage of personal information due to unauthorized access to our contractor’s email distribution service |
| Date of occurrence | 2 November 2026 (the date on which the Company received a report of the personal information breach from アララ株式会社) |
| Date recognized / date notice received | 2 November 2026 |
| Subject Entity | HASEGAWA CO.,LTD., アララ株式会社 |
| Target Locations / Products | The server for アララ株式会社's repica email delivery system and emails sent by the Company |
| Cause | Unauthorized access by a third party to the repica server |
| Amount of Impact on Business Performance | No impact on business performance. Amount: Not disclosed |
| Accounting period in which recognized | The event occurred after the end of the consolidated accounting period for the second quarter of the fiscal year ending March 2027 and had no impact on performance for that period. |
| Impact on Earnings Forecast | The event has not been incorporated into the full-year consolidated earnings forecast for the fiscal year ending March 2027. If a revision to the earnings forecast or any other matter requiring disclosure arises, it will be reported promptly. |
| Type of litigation or proceeding | Report to the Personal Information Protection Commission |
| Court or authority | Personal Information Protection Commission |
| Suspended operations | Fully suspended email delivery through the email delivery server on which unauthorized access was confirmed |
| Scheduled resumption date | The planned resumption date is Not disclosed. Migration to a separate email delivery platform with adequate security measures is under way. |
| Measures to prevent recurrence | Email delivery through the affected email delivery server has already been fully suspended / Migration to a separate email delivery platform with adequate security measures will be pursued / Monitoring and reassessment of the information security framework, including that of service providers, will be strengthened / The report to the Personal Information Protection Commission will be submitted appropriately in coordination with アララ株式会社 |
| Outlook | Migration to a separate email delivery platform, strengthened monitoring and reassessment of the information security framework, including that of service providers, and submission of a report to the Personal Information Protection Commission will be pursued. Individual notifications were sent to the 305 affected recipients on 5 November 2026. |
| Planned follow-up disclosure | If a revision to the earnings forecast or any other matter requiring disclosure arises, it will be reported promptly. |
Items this document does not state (9)
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 server for the repica email delivery system operated and managed by アララ株式会社 was subject to unauthorized access by a third party.