oportunists are legion, but there are enough 'pros' about, and a rural area isn't enough to put them off.
Round my old stomping ground Stratford Upon Avon, they relished it; plenty of posh country houses, with plenty of posh cars, well away from any other, down lanes with forty minute response tiomes from the nearest plod, if they even bothered to heed a call out!
And as one pro commented on TV not long back; do a Post office 'blag' and your facing ten years, for what, two three grand?
Take a 40K Rangie of some-ones drive you'll get 10K for it, and risk just six months suspended!
And Landies are a 'Target' vehilcle of both pro's and opportunists; easy to take, and easy to get rid of, either by ringing or breaking.
And a car that might only be worth a couple of grand on the open market, stripped for spares and flogged on e-bay, is often worth two or three times what it would get in auto-Trader with a V5, Tax & Test!
If its got any 'goodies' on it like a winch bumper, fancy wheels, or stuff like that, even more desirable, and even more fencable.
And as said, all it takes is a flat bed and a winch, and unless you have the thing locked in a garage or chained to the floor, and even that's not much of an added ipediment to them, they'll have it away faster tham most of us could with the keys!
Which is thier other means; fishing them through letter-boxes, or pick-pocketing them on your way out of a car-park!
For me; 'Hard' security is always the more re-assuring. I dont like alarms; no-bugger takes any notice of them; and imobilisers just seem to add something else in the wiring to go wrong when you least want it too!
Only 'electric' security I reckon on is the battery isolator, with low amp fuse to keep clock & memory circuits live.
Simple and effective, as long as they dont know it's there, and everything lights up if they get as far as the ignition barel, when it can cause them some hinderence and pottential confusion.
Good steering-wheel lock is a good starting point, beyond that, how much extra is useful, and how much just a pain in the arse, more likely to hinder YOU driving the thing than a pottential toe-rag?
Landy-Locks aren't great, but so what, they dont bother with them anyway, they just 'pop' the locks or smash the window.
Hasps on the door, on a Defender, I guess mean that they cant pop them, and if they smash the window, they still cant open the door, but a pad-lock is fairly easily defeated by a pair of bolt-croppers..... maybe a useful precaution, but a bit of a hinderence to you the usual driver, and really only a deterant to the real opportunists and ameteurs.
Really I dont see much to be gained from going much further; except basic precautions over leaving stuff in the car or on display in it; where you park it, and keeping hold of your keys and such.