Member States shall designate a supervisory body established in their territory or, upon mutual agreement with another Member State, a supervisory body established in that other Member State. That body shall be responsible for supervisory tasks in the designating Member State.

Supervisory bodies shall be given the necessary powers and adequate resources for the exercise of their tasks.

Member States shall notify to the Commission the names and the addresses of their respective designated supervisory bodies.

Member States may require the supervisory body to establish, maintain and update a trust infrastructure in accordance with the conditions under national law.

By 31 March each year, each supervisory body shall submit to the Commission a report on its previous calendar year’s main activities together with a summary of breach notifications received from trust service providers in accordance with Article 19(2).

The Commission shall make the annual report referred to in paragraph 6 available to Member States.

The Commission may, by means of implementing acts, define the formats and procedures for the report referred to in paragraph 6. Those implementing acts shall be adopted in accordance with the examination procedure referred to in Article 48(2).

Supervisory bodies shall cooperate with a view to exchanging good practice.

A supervisory body shall, upon receipt of a justified request from another supervisory body, provide that body with assistance so that the activities of supervisory bodies can be carried out in a consistent manner. Mutual assistance may cover, in particular, information requests and supervisory measures, such as requests to carry out inspections related to the conformity assessment reports as referred to in Articles 20 and 21.

Where appropriate, Member States may authorise their respective supervisory bodies to carry out joint investigations in which staff from other Member States’ supervisory bodies is involved. The arrangements and procedures for such joint actions shall be agreed upon and established by the Member States concerned in accordance with their national law.

Qualified and non-qualified trust service providers shall take appropriate technical and organisational measures to manage the risks posed to the security of the trust services they provide. Having regard to the latest technological developments, those measures shall ensure that the level of security is commensurate to the degree of risk. In particular, measures shall be taken to prevent and minimise the impact of security incidents and inform stakeholders of the adverse effects of any such incidents.

Qualified and non-qualified trust service providers shall, without undue delay but in any event within 24 hours after having become aware of it, notify the supervisory body and, where applicable, other relevant bodies, such as the competent national body for information security or the data protection authority, of any breach of security or loss of integrity that has a significant impact on the trust service provided or on the personal data maintained therein.

Where the breach of security or loss of integrity is likely to adversely affect a natural or legal person to whom the trusted service has been provided, the trust service provider shall also notify the natural or legal person of the breach of security or loss of integrity without undue delay.

Where appropriate, in particular if a breach of security or loss of integrity concerns two or more Member States, the notified supervisory body shall inform the supervisory bodies in other Member States concerned and ENISA.

The notified supervisory body shall inform the public or require the trust service provider to do so, where it determines that disclosure of the breach of security or loss of integrity is in the public interest.

The supervisory body shall provide ENISA once a year with a summary of notifications of breach of security and loss of integrity received from trust service providers.