Step 1: get a dog, dogs are good guard animals for you and their own territory. Step 2: get a 45 magnum or a 9mm or just a 12 gauge pump or semi auto (KSG) is a good security shotgun or you can get a AR15 or a AR10. If you here any noises that may be concerning walk out with any of these fine firearms and (you can even deck them out too with flash lights, lasers, an Effin Acog or Holographic sight) scare the living daylight out of some douche bag... You are legally allowed to open fire because breaking in is more than a personal offense. This is assault and more than likely if someone breaks in they are packing to. If someone broke in my house and I had my gun out and they didn't think twice about it... Well.... They sell guns for a reason. To protect.