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
A server of the email distribution system “repica” operated and managed by アララ株式会社
Unauthorized access by a third party
Company response
Email distribution via the relevant email distribution server
A framework for working closely with アララ株式会社 and other relevant companies, with the identification of customers whose information was leaked and the scope of the impact as the highest priorities
To ensure security, we are preparing to switch to another distribution platform with sufficient security measures in place.
The impact of this matter on our earnings forecast is under review. We will promptly provide notice if any matters requiring disclosure arise.
We will continue to verify the details and identify the affected individuals, and will promptly provide individual notice and take the necessary measures once specific customers whose information was leaked have been identified. We will also continue preparing to switch to another distribution platform with sufficient security measures in place.
We will promptly report the detailed investigation results and the specific scope of the impact as soon as they become clear.
| 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 we received the leakage report from アララ株式会社; the actual date of the unauthorized access is Not disclosed) |
| Date recognized / date notice received | 2 November 2026 |
| Subject Entity | HASEGAWA CO.,LTD., アララ株式会社 |
| Target Locations / Products | A server of the email distribution system “repica” operated and managed by アララ株式会社 |
| Cause | Unauthorized access by a third party |
| Impact on Earnings Forecast | The impact of this matter on our earnings forecast is under review. We will promptly provide notice if any matters requiring disclosure arise. |
| Suspended operations | Email distribution via the relevant email distribution server |
| Investigation structure | A framework for working closely with アララ株式会社 and other relevant companies, with the identification of customers whose information was leaked and the scope of the impact as the highest priorities |
| Measures to prevent recurrence | To ensure security, we are preparing to switch to another distribution platform with sufficient security measures in place. |
| Outlook | We will continue to verify the details and identify the affected individuals, and will promptly provide individual notice and take the necessary measures once specific customers whose information was leaked have been identified. We will also continue preparing to switch to another distribution platform with sufficient security measures in place. |
| Planned follow-up disclosure | We will promptly report the detailed investigation results and the specific scope of the impact as soon as they become clear. |
Items this document does not state (13)
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.A server of the email distribution system “repica,” operated and managed by アララ株式会社, was subject to unauthorized access by a third party.