This report from the eSafety Commissioner investigates children’s online lives and explores what parents do and don’t know about their experiences. The report outlines a range of negative online content and behaviours encountered by children, including a high proportion of young people aged 14-17 being exposed to sexual content. Almost half of children surveyed were treated ‘in a hurtful or nasty way’ online in the past year while a quarter of children surveyed had engaged in this negative behaviour themselves. Encouragingly, it found that almost all children did something in response to negative online behaviour such as telling their parents.