Thank you for your continued use of our services.

Following our previous notification regarding the system outage, we have been conducting a joint investigation with external specialists. It has been determined that the cause was a ransomware attack.

We sincerely apologize for the inconvenience and concern this incident has caused.

【Details Revealed】

・Evidence of unauthorized access and ransomware infection has been confirmed

・Servers suspected of being affected have been isolated, and investigation into the attack vector is ongoing

・Restoration efforts are proceeding cautiously with safety as the top priority

【Impact on Customer Information】

At this time, no evidence of information leakage has been confirmed.

We will continue our investigation and promptly report any changes in the situation.

【Current Response Status】

・Containment of potentially infected devices

・Preparing system restoration using backup data

・Continuing log analysis

・Strengthening security measures (expanding monitoring, reviewing authentication settings, etc.)

We are handling this matter with a focus on safety and transparency.

We will provide updates on this page as developments occur.

We sincerely apologize for the continued inconvenience and appreciate your understanding.

【Contact Information / Responsible Department】

Naigai, CSIRT Headquarter

csirt@naigaijp.com