There is usually no state or local law that covers the matter well. This is still a frontier. The tragic suicide of Megan Meier, which brought this topic to my own attention, occurred less than a decade ago.

Federal computer abuse legislation is about as well as the crime can be prosecuted, I believe due to 1st Amendment protection of free speech.

Ultimately it's up to teaching our children to be strong, as this is easily an extranational threat.