Article 19 F1
An official shall not, without permission from the appointing authority, disclose on any grounds whatever, in any legal proceedings, information of which he has knowledge by reason of his duties. Permission shall be refused only where the interests of the Union so require and such refusal would not entail criminal consequences as far as the official is concerned. An official shall continue to be bound by this obligation after leaving the service.
The provisions of the first paragraph shall not apply to an official or former official giving evidence before the Court of Justice of the European Union or before the Disciplinary Board of an institution on a matter concerning a servant or former servant of the European Union.