The following protective factors are direct ways to increase online safety.
Keep all software up to date
Inform your adolescent that once a picture or information is sent, s/he loses control of what happens to it, so to be mindful of what is sent.
Inform your adolescent that pictures can be captured (freezing photos, recording video) by others without knowing, so to be mindful of how the webcam is used. Disconnect the webcam when not in use.