Result of the resolution: Imposition of a warning / reprimand
The sending of an electronic mail to a plurality of addressees without using the option of hidden copy (Cco) and the consequent revelation of particulars in third (the address of mail of each one in the rest of addressees) constitutes a severe offense, for the breach of the duty of secret.
Applied articles: 44.3.d) and 10 LOPD.