The author examines whether existing law in Europe, Germany, and Chile sufficiently protects personal data in social networks from abuse. He delves deeply into comparing German and European regulations with the legal situation in Chile, two very different legal systems and technologically complex issues. The focus of the book is on the investigation of data protection specifically in social networks and on shedding light on the international dimension of this phenomenon. In this way, the author makes a legal contribution with a cross-border perspective on the topic of data protection.