In an era where personal data is being produced and shared on a massive, daily basis, the concept of anonymization takes on a central role in the debate on privacy protection and the ethical reuse of data. With the advent of the General Data Protection Regulation (GDPR), the European regulatory framework introduced precise definitions and stringent obligations for the processing of personal data, clearly distinguishing between identifiable, pseudonymized, and fully anonymized data. According to the GDPR, data can only be considered anonymous when it is rendered so irreversibly, meaning when it is no longer possible to directly or indirectly identify the data