6283 Chun-An Announces Network Security Incident

Release Date: July 21, 2025 Statement Date: July 20, 2025 Statement Time: 20:00:54 Company Code: 6283 Company Name: Chun-An Subject: Explanation of the Company's Network Security Incident Applicable Clause: Clause 26 Incident Date: July 20, 2025

Details: 1. Incident Date: July 20, 2025 2. Cause: Explanation of a network security incident at the company 3. Response Process: Upon receiving an alert of abnormal activity, the company's information security unit conducted an investigation and confirmed it was an encryption attack. The company immediately activated its cybersecurity incident response mechanism and initiated comprehensive detection and protective measures. Preliminary assessment confirms that internal information systems and the official website are operating normally, with no material impact observed. The company will continue to strengthen monitoring and protective measures to ensure information system security and operational stability. 4. Estimated Loss or Impact: Assessed as having no significant impact on company operations. 5. Potential Insurance Payout Amount: Not applicable 6. Improvement Status and Future Measures: The company will continue to enhance security controls over its network and information infrastructure to ensure information security. 7. Other Matters to be Disclosed: None