it all depends on what the construction of the garage is
no point in putting all the security on the door if you can just bash it off it's hinges with a sledgehammer
we've got double thick pillars around the garage door, that and you can't open it from the outside sort of helps
plus there is another car in front so that you can't open the door without moving the car first
plus there are steel gates to stop prying eyes
and there are stops in the driveway to stop if all that fails
plus it's alarmed separately
9 inch concrete blocks is where it's at though