She is working on the Australian Child Maltreatment Study ACMS , which is the first study to assess the prevalence of child maltreatment at a population level. Parents have many things to worry about. But online sexual abuse is increasing at an exponential rate. Last week, the Australian Federal Police announced it had busted an alleged child sex offender network, warning. Read more: Dark web: Study reveals how new offenders get involved in online paedophile communities.