Book excerpt: Drawing on the latest research, theory and practice, this is the first book to provide social workers with an evidence-based, practical guide to safeguarding children and young people from abuse, in a world of sexting, selfies and snap chat. It presents an overview of the key e-safety and online risks to children and young people, including dark play, digital self-harm, and online grooming, sexualisation, bullying, offending and radicalisation. It also examines online boundaries, relationships and identity and the future of technologies. Case study examples and discussion of key principles will help social workers consider, mitigate and manage online risks and their effects for safeguarding children and young people, and their families and carers.