Abusers are often close relatives, family friends, or stereotypically trustworthy figures like pastors, but both child porn and sometimes children are trafficked.
I don't have stats off the top of my head, but it's possible, albeit labor-intensive, to make some inferences. Many child porn cases are prosecuted at the federal level because electronic communications are a kind of interstate commerce. By digging through PACER and similar legal databases, it's not too hard to build a corpus of criminal complaints. The really labor intensive part (although ML and other methods help to shorten it) is parsing the legalistic documents to extract information about which platforms most easily facilitate contact and negotiations between peers (CSAM enthusiasts) and targets (unwary kids preyed upon by unscrupulous adults).
It might also be possible to extract information on prosecutions resulting from a report or fortuitous discovery of CSAM-related activity, and that involving sting operations by law enforcement.
I don't have stats off the top of my head, but it's possible, albeit labor-intensive, to make some inferences. Many child porn cases are prosecuted at the federal level because electronic communications are a kind of interstate commerce. By digging through PACER and similar legal databases, it's not too hard to build a corpus of criminal complaints. The really labor intensive part (although ML and other methods help to shorten it) is parsing the legalistic documents to extract information about which platforms most easily facilitate contact and negotiations between peers (CSAM enthusiasts) and targets (unwary kids preyed upon by unscrupulous adults).
It might also be possible to extract information on prosecutions resulting from a report or fortuitous discovery of CSAM-related activity, and that involving sting operations by law enforcement.