Dear Valued Customers,

Thank you for your continued support.

We are writing to inform you of an incident involving unauthorized access (ransomware) that disrupted some of our systems. We sincerely apologize for the significant concern and inconvenience this incident has caused to our customers and all other affected parties.

Current Status

• All affected systems have been fully restored.
• Normal business operations have resumed as of today.

Impact on Customer Information

At this time, we have found no evidence that information provided by your company has been leaked to external parties. Our investigation is ongoing, and we will promptly inform you of any changes to the situation.

We are continuing a detailed investigation and analysis of the cause of this incident in cooperation with external specialists.

Based on our current understanding, the incident may have resulted from a combination of factors rather than a single specific cause. We take this incident very seriously and will continue to implement measures to prevent recurrence based on the findings of the investigation.

We once again sincerely apologize for the concern this incident has caused. We will work across our group to strengthen security so that you can continue to do business with us with confidence.

If you have any questions regarding this matter, please contact the team listed below.

Thank you for your continued understanding and support.

Contact Information

Naigai Co., Ltd.
Naigai CSIRT Incident Response Headquarters
csirt@naigaijp.com