Possible information leakage following unauthorized access to “Blastmail”
“Blastmail,” operated by 株式会社ラクスライトクラウド, and Gyet Co.,Ltd.
“Blastmail” and the recipients of マックハウス newsletters
Unauthorized access by a third party
Related procedures
Required actions under applicable laws, including reports to relevant authorities such as the Personal Information Protection Commission
Relevant authorities such as the Personal Information Protection Commission
The impact of this matter on the Company’s consolidated results is currently considered immaterial. The Company will promptly disclose any matter that should be disclosed if one arises.
Company response
Email distribution through “Blastmail.” The service has been suspended since 12:30 a.m. on 21 October 2026 and remained suspended as of 23 October 2026.
The Company will work with the service operator to confirm the number of affected records, the scope of the impact and other matters. It will also take the necessary actions under applicable laws, including reporting to relevant authorities such as the Personal Information Protection Commission and notifying affected customers. In addition, the Company will warn customers to remain vigilant regarding suspicious emails and other threats.
The Company will promptly provide an update once the number of affected records has been confirmed. The Company will promptly disclose any matter that should be disclosed if one arises.
| Item | Details |
|---|---|
| Event name | Possible information leakage following unauthorized access to “Blastmail” |
| Date of occurrence | 21 October 2026 |
| Subject Entity | “Blastmail,” operated by 株式会社ラクスライトクラウド, and Gyet Co.,Ltd. |
| Target Locations / Products | “Blastmail” and the recipients of マックハウス newsletters |
| Cause | Unauthorized access by a third party |
| Impact on Earnings Forecast | The impact of this matter on the Company’s consolidated results is currently considered immaterial. The Company will promptly disclose any matter that should be disclosed if one arises. |
| Type of litigation or proceeding | Required actions under applicable laws, including reports to relevant authorities such as the Personal Information Protection Commission |
| Court or authority | Relevant authorities such as the Personal Information Protection Commission |
| Suspended operations | Email distribution through “Blastmail.” The service has been suspended since 12:30 a.m. on 21 October 2026 and remained suspended as of 23 October 2026. |
| Outlook | The Company will work with the service operator to confirm the number of affected records, the scope of the impact and other matters. It will also take the necessary actions under applicable laws, including reporting to relevant authorities such as the Personal Information Protection Commission and notifying affected customers. In addition, the Company will warn customers to remain vigilant regarding suspicious emails and other threats. |
| Planned follow-up disclosure | The Company will promptly provide an update once the number of affected records has been confirmed. The Company will promptly disclose any matter that should be disclosed if one arises. |
Items this document does not state (14)
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 occurred at the external email delivery service “Blastmail” used by the Company.