1. In the cases referred to in Article 13(3), Article 15(3) and Article 16(4) Member States shall adopt measures providing that the rights of the data subject may also be exercised through the competent supervisory authority.
3. Where the right referred to in paragraph 1 is exercised, the supervisory authority shall inform the data subject at least that all necessary verifications or a review by the supervisory authority have taken place. The supervisory authority shall also inform the data subject of his or her right to seek a judicial remedy.