1. Sensitive documents are documents originating from the institutions or the agencies established by them, from Member States, third countries or International Organisations, classified as 'TRÈS SECRET/TOP SECRET', 'SECRET' or 'CONFIDENTIEL' in accordance with the rules of the institution concerned, which protect essential interests of the European Union or of one or more of its Member States in the areas covered by Article 4(1)(a), notably public security, defence and military matters.

2. Applications for access to sensitive documents under the procedures laid down in Articles 7 and 8 shall be handled only by those persons who have a right to acquaint themselves with those documents. These persons shall also, without prejudice to Article 11(2), assess which references to sensitive documents could be made in the public register.

3. Sensitive documents shall be recorded in the register or released only with the consent of the originator.

4. An institution which decides to refuse access to a sensitive document shall give the reasons for its decision in a manner which does not harm the interests protected in Article 4.