One of the things that makes the monsters target an individual is their vulnerability. They look for people who don’t feel like they have a support system, don’t have a strong kesher with their parents or don’t seem likely to seek help. I want to add that that does not mean they don’t have a support system or parents who care, it just means that they don’t feel it is a place for them to go. The more you let your kids know you are there for them and the more you actively seek out info from them about their lives, the greater the chance they will not appear so vulnerable.
Again, it’s not to blame anyone, it’s a recommendation to lower the chances.