This thread is getting worryingly paranoid. Where do you people live?
Ha ha, the thought has crossed my mind. For my own part, I'm buying it to travel in, so I know I'll be in dodgy places. But I'm going to chain it to something and do what motorcyclists do, basically.
But, come to think of it, I don't have a garage here at home, so it will be covered in some dirty (looking) dark tarp.
I will not be leaving anything of real value there for long, and I think that's the best theft protection there is.