Ad Tech, I would bet its ad tech.
If this goes within the Ad Tech industry and knowing how Ad tech industry is, I don't feel quite surprised if we might see foreign adversarial nation buying the Social Security data from Ad tech/ (this Doge person in general either directly or through multiple layers) even in secretive manner at this point.
Either way this data is definitely going to spread behind closed doors.
Nobody in Ad Tech is going to risk jailtime for a slightly higher CPM.