
Emails
A mailbox is very hard to manage for children, and even for some adults. With all the emails presumably sent by the family that lead to adult websites and executable files, the spam and the phishing, your child could easily be confused. For a few months, sit with him and look at his emails together until he can detect frauds, fakes and viruses.
Don’t forget to tell him not to give his email address to everyone who asks if he doesn’t want to end up on every mailing list there is. If you want, you can give him an alternate email address to give on games websites and avoid getting spammed.