This vital, sensitive guide explains the serious issues children face online and how they are impacted by them on a developmental, neurological, social, mental health, and well-being level. Covering technologies used by children aged two through to adulthood, it offers parents and professionals clear, evidence-based information about online harms and their effects and what they can do to support their child. Catherine Knibbs, specialist advisor in the field, explains the issues involved when using online platforms and devices in family, social and educational settings. Examined in as non-traumatizing a way as possible, the book covers key topics, including cyberbullying; cyberstalking; pornography; online grooming; sexting; live streaming; vigilantism; suicide and self-harm; trolling and e-harassment; bantz, doxing, and social media hacking; dares, trends, and life-threatening activities; information and misinformation; and psychological games. Online Harms and Cybertrauma will equip professionals and parents with the knowledge to support their work and direct conversations about the online harms that young people face. It is essential for those training and working with children in psychological, educational, and social work contexts, as well as parents, policy makers, and those involved in development of online technologies.