Put it in a 1" thick, hardened steel box, with bullet proof windows. Weld logging chain to the back of the box. Use six inch lag bolts to screw into a 24" diameter minimum tree and use a 1/2" shank hardened steel lock to secure the chain around the tree. Finally, encase the whole thing in 6" of concrete. And then, maybe it'll be safe.
Please forgive my cynicism. I just lost my fifth camera to theft. I am OBVIOUSLY doing it WRONG!!
If you are really worried about theft, put it in the least conspicuous place you can think of and use every available security device at your disposal. Even so, all they will do is keep an honest man honest. Three of the five I have lost were in steel boxes either bolted or chained to trees.
The psycho nut bags have always been there. They just get better press now.
Take away their guns, they'll use knives. Take away their knives and they'll use sticks!!