A Spanish electricity customer calls her local supplier with Questions: about the company’s upcoming merger.

According to Article 13 of the GDPR, the controller (in this case, the electricity supplier) has the obligation to provide the data subject (in this case, the customer) with information about the processing of their personal data, including the recipients or categories of recipients of the personal data, if any. However, before providing such information, the controller must verify the identity of the data subject, to ensure that the information is not disclosed to unauthorized persons. This verification can be done by other means than the personal data already collected, such as asking for additional information, sending a verification code, or using a secure online portal. The other options (A, B, and C) are not relevant for this verification, as they do not relate to the identity of the data subject, but to the scope, purpose, and history of the processing. References:

Article 13 of the GDPR

The right to be informed (transparency) (Article 13 & 14 GDPR)

Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation)