[SOTEN] Explanation Regarding Our Company's Network Cybersecurity Incident

1. Date of occurrence: 2026/05/07 2. Reason for occurrence: The company's cybersecurity unit discovered that unidentified hackers had invaded its hosts and encrypted some server data. 3. Handling process: Cybersecurity defense and recovery mechanisms were immediately activated, and technical experts from external information companies and system vendors were commissioned to assist in the handling. 4. Estimated potential losses or impact: After evaluation, it is deemed to have no significant impact on the company's finances, business, and operations. 5. Amount of insurance compensation that may be obtained: Not applicable. 6. Improvement status and future countermeasures: The company will continue to enhance the security control of its network and information infrastructure to ensure information security. 7. Other matters that need to be specified: None.