Welcome to PC constanceschofield - how old is your son? I have a teenage daughter 14 and another daughter 10. My oldest just has an IPOD touch because I don't think she needs a phone at this point. Someone could get into trouble with this as well. I found it easier just to have honest conversations about online safety and boundaries.

When my daughter was in grade 8, a girl at her school sent pornographic grade photos of herself to a boy at the school. He received them via Wi Fi on his Xbox with a 50 inch screen TV, while his friend was over. He then sent them to all his friends at school. Someone tipped off the police and several young men including the girl were all called down to the police station. She ended up transferring schools because everyone was gossiping. Luckily for them they were spared getting a record and given counseling instead.

Have a calm discussion about this with your son. If he's underage this is illegal. More importantly - that person can send out the nude pic to others and once its online its there for good...... because you don't know how many times it was sent out. You can also reinforce that nudity should be reserved for that special someone and not devalued by casually sending it out. Doing it this way will prevent it from happening, rather than 'waiting' for the mistake. Be proactive not reactive is my philosophy - best of luck.