It’s also worth adding, if your child comes to you, having fucked up, don’t berate them, they already know. E.g. sent nudes to someone who is now trying to blackmail them. It’s so easy to do, under the pressure, but you must resist.

Instead thank them for coming to you, and let them know you can fix it together, they are not alone. You can discuss what they should have done, and what to do in the future once you’re both thoroughly past emotional reactions to it. Till then you’re in protection mode, not teaching mode.