"They are not stupid." Some are, those are caught. But those who are not, learned to be very sneaky. They have to hide their dark side ALL the time. That is a

"They are not stupid." Some are, those are caught. But those who are not, learned to be very sneaky. They have to hide their dark side ALL the time. That is a pretty intense training in terms of operational security. And the solution to this is probably not technical, but social. People could get to know their neighbors more. My experience with those guys is, it still shows, if you pay attention. But if you are sure your neighbor is not a pedo, then it is one more person you can trust to keep a lookout for the dangerous types. You know, classic community building stuff.