1. Member States shall require that all persons working for or who have worked for supervisors and the public authorities referred to in Article 52, as well as auditors or experts acting on behalf of those supervisors or authorities be bound by the obligation of professional secrecy.
Without prejudice to cases covered by criminal investigations and prosecutions under Union and national law and information provided to FIUs pursuant to Articles 42 and 43, confidential information which the persons referred to in the first subparagraph receive in the course of their duties under this Directive may be disclosed only in summary or aggregate form, in such a way that individual obliged entities cannot be identified.