Nearly one in six adolescents have experienced cyberbullying, an international study has found, El.kz citesBBC.
More school-aged children have reported being cyberbullied than before the pandemic, according to the report by the World Health Organization (WHO).
The study surveyed more than 279,000 young people from 44 countries and regions.
In Wales, where nearly 37,000 young people were surveyed, 17% reported experiencing cyberbullying.
The Health Behaviour in School-aged Children (HBSC) survey suggests the proportion of adolescents who reported being cyberbullied has increased since 2018, from 12% to 15% for boys and 13% to 16% for girls.
In England, where more than 4,200 young people were surveyed, nearly one in five (19%) reported being cyberbullied at least once or twice in the past couple of months, and 11% reported cyberbullying others.
In Scotland, where more than 4,300 young people were surveyed, 18% said they had experienced cyberbullying and 11% reported cyberbullying others.
The report said there was an "urgent need" to educate young people, families and schools of the forms of cyberbullying and its implications.
Dr Hans Henri P. Kluge, WHO regional director for Europe, said: "As young people's social engagement switched to the online environment during the Covid-19 pandemic lockdowns, so it appears that perpetration and experience of cyberbullying increased.
"Focusing on virtual types of peer violence is now an urgent priority to safeguard the health and wellbeing of populations of adolescents and young people, and cyberbullying must be viewed as a major issue for societies.
"With young people spending up to six hours online every single day, even small changes in the rates of bullying and violence can have profound implications for the health and wellbeing of thousands.
"This is both a health and a human rights issue, and we must step up to protect our children from violence and harm, both offline and online."