I imagine it's not a weighting system per se. I don't know any more than you, so all I can say really is that if I were designing it, encryption would be considered a major red flag one someone who already had the other characteristics.
That is, if someone encrypts, that means nothing. But if you are comparing two fundamentalists predisposed to violence, and one of them uses crypto and privacy software and the other doesn't - I would lean heavily towards investigating the crypto guy. He's likely planning something.
I guess what i'm saying is that I think the interaction of a feature like crypto should be nonlinear with certain other features.
That is, if someone encrypts, that means nothing. But if you are comparing two fundamentalists predisposed to violence, and one of them uses crypto and privacy software and the other doesn't - I would lean heavily towards investigating the crypto guy. He's likely planning something.
I guess what i'm saying is that I think the interaction of a feature like crypto should be nonlinear with certain other features.