System Failures Caused by Cyberattacks
OMIKENSHI CO.,LTD. (filing company)
Our systems (all servers suspected of having been accessed without authorization)
Unauthorized access by an external third party (believed to have resulted from a cyberattack)
Company response
We established a response team and, with the assistance of external specialists, began identifying the intrusion route and investigating the extent of the damage.
To prevent further damage, we will temporarily isolate all servers suspected of having been accessed without authorization from the network and proceed with efforts to determine the scope of the impact. We will also take measures to prevent the damage from spreading and restore the systems.
If any matters requiring disclosure become clear, we will disclose them promptly.
| Item | Details |
|---|---|
| Event name | System Failures Caused by Cyberattacks |
| Date of occurrence | A system disruption occurred on Monday, 16 March 2026 |
| Subject Entity | OMIKENSHI CO.,LTD. (filing company) |
| Target Locations / Products | Our systems (all servers suspected of having been accessed without authorization) |
| Cause | Unauthorized access by an external third party (believed to have resulted from a cyberattack) |
| Investigation structure | We established a response team and, with the assistance of external specialists, began identifying the intrusion route and investigating the extent of the damage. |
| Outlook | To prevent further damage, we will temporarily isolate all servers suspected of having been accessed without authorization from the network and proceed with efforts to determine the scope of the impact. We will also take measures to prevent the damage from spreading and restore the systems. |
| Planned follow-up disclosure | If any matters requiring disclosure become clear, we will disclose them promptly. |
Items this document does not state (17)
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 the system was subject to unauthorized access by an external third party.