1.The obligation of professional secrecy shall apply to all persons who work or who have worked for the competent authority and for entities to which competent authorities may have delegated certain tasks. Information covered by professional secrecy may not be disclosed to any other person or authority except by virtue of the laws, regulations or administrative provisions of a Member State.
2.Competent authorities of the Member States shall cooperate with each other, whenever necessary, for the purpose of carrying out their duties and making use of their powers, whether set out in this Directive or in national law adopted pursuant to this Directive. Competent authorities shall render assistance to competent authorities of other Member States.
3.Paragraph 1 shall not prevent the competent authorities from exchanging confidential information. Information thus exchanged shall be covered by the obligation of professional secrecy to which the persons employed or formerly employed by the competent authorities receiving the information are subject.
4.Member States may conclude cooperation agreements providing for the exchange of information with the competent authorities or bodies of third countries enabled by their respective legislation to carry out any of the tasks assigned by this Directive to the competent authorities in accordance with Article 24. Such an exchange of information is subject to guarantees of professional secrecy at least equivalent to those referred to in this Article. Such exchange of information shall be intended for the performance of the supervisory task of the authorities or bodies mentioned. Where the information originates in another Member State, it may not be disclosed without the express agreement of the competent authorities which have disclosed it and, where appropriate, solely for the purposes for which those authorities gave their agreement.