This article introduces the monographic issue of the Journal for the Study of Education and Development devoted to Internet challenges and risks among adolescents. It provides an overview of issues like the problematic use of the Internet and smartphones, cyberbullying, cyberhate and digital violence in different contexts, including intimate relationships. It also addresses sexual risks like sexting, grooming and sexual harassment facilitated by technology, as well as the spread of content on self-harm. It highlights the fact that these risks tend to be interrelated and share common vulnerability factors. The monograph includes studies with large samples and rigorous methodologies which analyse explanatory mechanisms like the search for social validation, body image and self-concept. This set of studies makes a significant contribution to our knowledge of digital risks while also underscoring the need to explore new challenges like those stemming from artificial intelligence and to develop culturally adapted preventive strategies.
