The review presents Szilvia Váradi’s monograph "Data Protection in the Age of Artificial Intelligence", the first comprehensive work on the subject in Hungarian. One of the book’s major strengths is that it guides the reader from the introduction of technological foundations to the detailed analysis of legal and data protection issues, with particular emphasis on the relevance of the GDPR and the AI Act. Váradi situates the significance of AI not only within a legal, but also within a social and economic context, underlining the urgency of regulation. The book clearly explains the data protection challenges of machine learning and large language models, highlighting problems of transparency and accountability. From a critical perspective, the detailed technological background may at times appear encyclopedic, yet this broader perspective provides a valuable basis for interdisciplinary approaches. The review concludes that the book is both a pioneering and a guiding work, serving the needs of professionals as well as a wider readership.