Notice Regarding a Potential Cyberattack Against Ikegami Tsushinki Co., Ltd. (Second Update)

Following our previous announcement on 24 September 2026, Ikegami Tsushinki Co., Ltd. (hereinafter IKEGAMI) is investigating the potential cyberattack in cooperation with external cybersecurity specialists. IKEGAMI would like to provide an update on the situation that has been confirmed, as follows.

1. Current Status

We have identified traces indicating suspected unauthorized external access to some of our servers, and have confirmed that some files stored on the affected servers have been encrypted. As our highest priority is to prevent further damage and ensure the security of our systems, our internal network remains disconnected.

We are currently conducting an investigation, with the assistance of external cybersecurity specialists, to identify the cause of the incident and determine the extent of its impact. 

2. Status of the Investigation into Potential Information Leakage

Upon reviewing information provided to us by authorities, we have confirmed that some of the information appears to contain materials originating from IKEGAMI.

However, the scope of any information leakage remains under investigation, and we have not yet been able to determine the full extent of the situation. We are also proceeding with the necessary reporting to and consultation with the relevant authorities.

3. Ongoing Response

IKEGAMI will continue to work closely with specialists to identify the cause of the incident and determine the extent of its impact. We will also proceed with the phased restoration of our internal network and systems once their security has been sufficiently confirmed.

Should the ongoing investigation reveal any material facts that warrant disclosure, IKEGAMI will promptly provide further updates.

We sincerely apologize once again for the significant concern and inconvenience this incident has caused our customers, business partners, shareholders, investors, and all other stakeholders.