Investigation Results Regarding Potential Information Leakage Following Unauthorized Access to Blastmail
Gyet Co.,Ltd.; 株式会社ラクスライトクラウド (operator of the external email distribution service)
The mailing-list information for the “Mac House” newsletter; “Blastmail”
The impact on consolidated results is considered immaterial (no specific amount was disclosed).
The impact on the earnings forecast is considered immaterial.
Company response
The timing for resuming email distribution will be considered after confirming safety and the operational framework, among other matters.
The investigation by an external specialist organisation was completed on 10 November 2026. No committee was established.
Related procedures
Investigation by an external specialist organization
The resumption of email distribution will be considered after confirming safety and the operational framework, among other matters. 株式会社ラクスライトクラウド plans to compile a formal report covering the cause and measures to prevent recurrence, among other matters.
If any matters requiring new disclosure are identified, the company will promptly announce them.
| Item | Details |
|---|---|
| Event name | Investigation Results Regarding Potential Information Leakage Following Unauthorized Access to Blastmail |
| Subject Entity | Gyet Co.,Ltd.; 株式会社ラクスライトクラウド (operator of the external email distribution service) |
| Target Locations / Products | The mailing-list information for the “Mac House” newsletter; “Blastmail” |
| Amount of Impact on Business Performance | The impact on consolidated results is considered immaterial (no specific amount was disclosed). |
| Impact on Earnings Forecast | The impact on the earnings forecast is considered immaterial. |
| Type of litigation or proceeding | Investigation by an external specialist organization |
| Scheduled resumption date | The timing for resuming email distribution will be considered after confirming safety and the operational framework, among other matters. |
| Investigation structure | The investigation by an external specialist organisation was completed on 10 November 2026. No committee was established. |
| Outlook | The resumption of email distribution will be considered after confirming safety and the operational framework, among other matters. 株式会社ラクスライトクラウド plans to compile a formal report covering the cause and measures to prevent recurrence, among other matters. |
| Planned follow-up disclosure | If any matters requiring new disclosure are identified, the company will promptly announce them. |
Items this document does not state (15)
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.The company was informed that, following unauthorised access to the external email distribution service “Blastmail” that it used, reader numbers and distribution numbers, which are system management numbers, were taken out. It was also informed that names, email addresses, dates of birth, genders and regions were not taken outside the system.