Confidentiality of registration data (under German law):

§ 7 Bundesmeldegesetz (= Federal Act on Registration)

(1) Persons employed by registration authorities or other bodies acting on their behalf shall be prohibited from collecting, processing or using personal data without authorization.

 

(2) When taking up their duties, the persons referred to in subsection 1 shall be informed by their employer of their obligations pursuant to subsection 1 and shall agree in writing to maintain the confidentiality of registration data. Their obligations shall continue after their employment ends.