1. Union entities may, on a voluntary basis, notify CERT-EU of, and provide it with information on, incidents, cyber threats, near misses and vulnerabilities that affect them. CERT-EU shall ensure that efficient means of communication, with a high level of traceability, confidentiality and reliability, are available for the purpose of facilitating information sharing with the Union entities. When processing notifications, CERT-EU may prioritise the processing of mandatory notifications over voluntary notifications. Without prejudice to Article 12, voluntary notification shall not result in the imposition of any additional obligations upon the reporting Union entity to which it would not have been subject had it not submitted the notification.