Seiberfwlio, camwybodaeth a rheoleiddio annigonol o apiau - dyna yw rhai o'r materion sy'n peri'r mwyaf o boen meddwl i bobl ifanc o ran diogelwch ar-lein, yn ôl grŵp o bobl ifanc o Gymru.
Cyberbullying, misinformation and inadequate regulation of apps are just some of the issues youngsters say they are most worried about when it comes to online safety, according to a group of young people from Wales.