Cyberbullying is an increasingly common problem, especially among young people, for whom much of their social lives take place online. Though we may be aware of the many dangers of cyberbullying, we are still in need of effective remedies. In this note, Renaissance Numérique provides an overview of the existing academic research on the subject of cyberbullying, in the hope of identifying themes for further attention and areas for concrete action. Rather than focusing on the extent of the problem as such, we are most concerned with intervention, specifically with prevention, detection and response. This note provides recommendations for all relevant stakeholders: families, schools, public authorities, platforms and children themselves, all of whom have a role to play in building an effective response to cyberbullying.