...It may not be likely, but certainly possible and as mentioned we can choose to ignore it and hope for the best or take reasonable precautions in the event our hopes are not realized.
Of all the victims of crime, other than domestic violence, there were few who didn't say something to the effect of "I never thought something like this could happen to me." If some think I am paranoid, it's certainly not the worst I've been called.
I think the vast majority of people in this country are in ignorant bliss of the evil that walks among us. The evil that lives a next door. People just do not know. Taking precautions is a good idea.
This morning there was a story of a very elderly couple attacked with a shovel in their retirement home. Course, a few years ago we had a woman beaten to death in her retirement home. Then there was a women and child who where just shot by three men for some reason. They shot an eight year old boy five times.
One can make plans to defend against this sort of evil or you can roll the dice and hope. I would rather plan and prepare rather than hope.
The OP's house seems to be like ours. If I saw a person looking at our house from the woods, THERE IS NO GOOD reason for that person to be there. NONE. If the person wanted help they would approach the house and knock on the door. Given our geography, there really is no good reason for someone to be standing in the woods. Someone with car problems would not walk to FIND our house to get help. They would go to the nearest house on the road. A person in the woods at our place is almost certainly up to no good. The people I have found in the woods WHERE up to no good.
The problem with the cameras is that they really are good for either keeping the bad guys away, if they see the cameras, or catching the bad guys after the fact. For the cameras to be useful, you really need something that can see at night. The best I could come up with was to have IR flood lights to illuminate around the house while having a camera(s) that could use that light to see what was happening outside. The IR light is not visible to human's but the camera(s) can use the IR. We have a boat load of outside lights, flick on the lights, which can be done from multiple positions in the house, and everything can be seen. Of course that would warn the bad buys which could be good or bad. The IR light would allow one to monitor without being observed.
A vulnerability one has in a rural setting is that there are often outbuildings a decent distance from the house. A bad guy that gets between you and the house is a concern. If you don't have a weapon with you then there needs to be one handy in the outbuilding. A cheap single or double shotgun locked up and hidden in the "barn" is a solution.
Later,
Dan