Lots of good information in this article, about how they weren’t who you would suspect, they worked to gain the trust of a child by minimizing the other adults in their lives, especially their parents, and used technology to communicate because parents weren’t savvy enough to keep track of how their kids used technology.
I’m not even going to quote it, just go read it.
http://www.whas11.com/news/two-child-sex-offenders-explain-how-they-picked-their-targets-1/434853661