Home > Parenting > Child > News Updated 30 October 2013 Child sexual abuse via internet on rise Sexual harassment via the internet is on the increase with teens between 15 and 17 years old most commonly targeted. EurekAlert 0 Shutterstock Related Damaging our children Child abuse warning signs 1 in 3 women worldwide abused ASK The Paediatrician » Follow Health24 on Facebook » Quiz Are you ready for a baby? » Subscribe Parenting newsletter » 10 interesting Down syndrome facts Autistic savant 'reads minds' Sexual abuse of children and adolescents can have serious health consequences for victims. Early studies have revealed that child sexual abuse is associated with an increased risk of later mental and physical health problems and risk-taking behaviour. The Institute of Social and Preventive Medicine at the University of Zurich, the Psychosomatics and Psychiatry Department at Zurich's University Children's Hospital and the Department of Psychiatry and Psychotherapy at University Hospital Zurich discovered that sexual abuse is alarmingly widespread in a representative sample of more than 6 000 9th grade students in Switzerland.Sexual harassment via the Internet is mentioned most frequently among the study participants, mainly between 15 and 17 years old, roughly 40% of girls and 17% of boys reported they had experienced at least one type of child sexual abuse. Relative to boys, sexual abuse without physical contact was reported twice as often in girls and sexual abuse with physical contact without penetration three times more often. Both genders reported "sexual harassment via the internet" as the most frequent form of abuse. 28% of girls abused via internetThis form of sexual abuse was experienced by roughly 28% of girls over the course of their lifetimes and by almost 10 percent of boys. At just under 15% for girls versus 5% for boys, "molested verbally or by e-mail/text message" was the second most common form of abuse. Just under 12 percent of the surveyed girls and 4% of the surveyed boys reported having been kissed or touched against their will. Approximately 2.5% of the girls had already experienced sexual abuse with penetration (vaginal, oral, anal or other); among boys, this figure was 0.6%.The results of the Zurich study are comparable to those of an earlier Swiss study which was conducted in Geneva between 1995 and 1996 in a similar age group asked similar questions. The prevalence of sexual abuse with physical contact is almost unchanged today. However, sexual abuse without physical contact occurs far more frequently. "We believe that this difference can be attributed to harassment via the Internet, e-mail, or text messaging. This type of sexual abuse was not surveyed back then", explains Dr Meichun Mohler-Kuo, senior research scientist at the Institute of Social and Preventive Medicine at the University of Zurich.Victimised by juvenile perpetratorsJust over half of the female victims and more than 70% of the male victims reported that they had been abused by a juvenile perpetrator. Furthermore, most of the victims of sexual abuse with physical contact knew the perpetrator – for instance, they were partners, peers, or acquaintances. "This new trend towards the majority being juvenile perpetrators, and being peers and acquaintances, is in contrast to the Geneva study, and might indicate increased violent behaviour among adolescents", explains Dr Ulrich Schnyder, Head of the Department of Psychiatry and Psychotherapy at University Hospital Zurich. And he adds: "Our results also differ considerably from official police reports, according to which perpetrators are usually adult, male relatives." This would seem to indicate significant under-reporting of abuse to officials.The majority did not disclose sexual abuseOnly about half of victimized girls and less than one-third of victimized boys disclosed their sexual abuse experiences. The disclosure rate is even lower with more severe forms of sexual abuse. Most victims who do disclose, do so to their peers; less than 20% to their families. Fewer than 10% of victims reported the sexual abuse to police. "Compared to similar studies from other countries, the disclosure figures in the Swiss study are low. The reluctance in reporting incidents of this kind to family members or authorities makes timely intervention more difficult," concludes Dr Schnyder.Photo about child abuse from Shutterstock NEXT ON HEALTH24X A weak grip may signal future health trouble, even in kids 2018-08-28 13:00 More: ChildNews advertisement Read Health24’s Comments Policy Comment on this story 0 comments Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... Live healthier Lifestyle » E-cigarettes: Here are five things to know E-cigarettes have become hugely popular in the past decade, but a rash of vaping-linked deaths and illnesses in the US is feeding caution about a product that's already banned in some places. Allergy » Ditch the itch: Researchers find new drug to fight hives A new drug works by targeting an immune system antibody called immunoglobulin E, which is responsible for the allergic reaction that causes hives.