Disneyland gets bomb threts all the time and the castle being one of the most known landmarks in the country yes it is a big target. after 9/11 they found out threw the government that a list was found and Disneyland was on it so they closed down the castle to never opn agian. There is no way to secure the castle. it has nothing to do with staffing, it was hardly ever staffed any way. It was like the tree house is now where a cast member walks threw every once in a wial, the tree house is taken care of by JC cast members when they go on task mst never do it thoght.