You can block sites or set the web browser for age appropriate browsing these settings will also allow you to filter inappropriate pictures of violence, nudity etc.Use child friendly web browers like Kiddle Kidrex Maxthon idsafe browser Kidsplorer Kidzsearch Safesearch kids K9 web protection browser for IOS Kidoz Sandbox IOS systems Kids browser for Android . Educate the child/young person about not sending anyone their identity email address telephone number or where they live and never send pics of themselves or area where they live. If the child / young person is using a desk top computer place the device in an area that can be mo monitored easily . computer games are also age appropriate ensure that any games are of suitable age for the person.
Restrict the amount of time a child / young person spends on the internet.