Definition
Means a natural or legal person who is referred to in the report or public disclosure as a person to whom the breach is attributed or with whom that person is associated
Source
Point (10) of Article 5 of Directive (EU) 2019/1937 of the European Parliament and of the Council of 23 October 2019
Link
https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32019L1937