Although terrorism is not a new phenomenon, future terrorists groups in general and lone wolf terrorists in particular will create new threats and put new security challenges to society. They are likely to have access to far more destructive technologies than available today. It is conceivable that one day a single individual acting alone could make and deploy a weapon of mass destruction. Finding such individuals and preventing their terror actions, could be done by: 1) technological means and administrative measures developed and managed by the state; 2) education and public health means to reduce the number of such potential individuals; and 3) new roles for the general public for early detection of such individuals.