Unauthorised access to the company’s systems
Digital Arts Inc. (the company)
The operating environment for the company’s cloud services and the internal environment. The affected services are i-FILTER@Cloud, m-FILTER@Cloud (Modern Edition), m-FILTER MailAdviser for Microsoft 365, FINAL CODE@Cloud, z-FILTER and Desk
Authentication information used to operate the company’s cloud services was illicitly obtained by a third party and used to gain access to the service operating environment.
Company response
Suspension of suspicious programs
Invalidation of credentials used for unauthorized access, replacement of credentials used in our operations, suspension of suspicious programs, replacement of server authentication keys, strengthening of credential management, access controls and monitoring systems, and rebuilding of services and networks
The impact of this matter on our business performance is currently under review. We will promptly notify you if any matters requiring disclosure arise.
We will report the matter to the relevant authorities and provide any necessary cooperation, while strengthening credential management, access controls and monitoring systems and working to prevent recurrence. We will also work to rebuild our services and networks.
We will promptly notify you if any matters requiring disclosure arise.
| Item | Details |
|---|---|
| Event name | Unauthorised access to the company’s systems |
| Date of occurrence | Around July 2025 (period covered by the discovered signs) |
| Date recognized / date notice received | 9 October 2026 (signs discovered through an AI-assisted comprehensive inspection) |
| Subject Entity | Digital Arts Inc. (the company) |
| Target Locations / Products | The operating environment for the company’s cloud services and the internal environment. The affected services are i-FILTER@Cloud, m-FILTER@Cloud (Modern Edition), m-FILTER MailAdviser for Microsoft 365, FINAL CODE@Cloud, z-FILTER and Desk |
| Cause | Authentication information used to operate the company’s cloud services was illicitly obtained by a third party and used to gain access to the service operating environment. |
| Impact on Earnings Forecast | The impact of this matter on our business performance is currently under review. We will promptly notify you if any matters requiring disclosure arise. |
| Suspended operations | Suspension of suspicious programs |
| Measures to prevent recurrence | Invalidation of credentials used for unauthorized access, replacement of credentials used in our operations, suspension of suspicious programs, replacement of server authentication keys, strengthening of credential management, access controls and monitoring systems, and rebuilding of services and networks |
| Outlook | We will report the matter to the relevant authorities and provide any necessary cooperation, while strengthening credential management, access controls and monitoring systems and working to prevent recurrence. We will also work to rebuild our services and networks. |
| Planned follow-up disclosure | We will promptly notify you if any matters requiring disclosure arise. |
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.In response to the recent increase in cyberattacks, the company conducted a comprehensive inspection using AI and discovered signs of unauthorised access. The company also stated that authentication information used to operate its cloud services had been illicitly obtained by a third party and used to gain access.