Hopefully my alarm system will protect my home when I'm not there, a good dog helps too. I do have extra window and locks installed, but window locks are easily defeated just by breaking the window. My biggest concern is a random home invasion which seems to be a popular thing now with todays thugs. Two or three thugs with weapons kick your front door in, terrorize, beat or worse for the family. Steal anything of value in two or three minutes and then they're gone (this type of crime isn't done in low income areas). I have a 6' double entry steel front door that with enough force, could be easily defeated.
I've used an old school method of securing these double entry doors at night by using the cross brace method utilizing a steel bed frame rail that I've notched to fit where the brackets are installed. I made up four U shaped steel brackets,. I installed two in the door jamb on each side of the door opening thru the studs with lag bolts. The other two brackets I bolted thru the doors where both doors come together with round headed carriage bolts. Once I place the cross bar into the brackets in the evening, that entry point is secured enough to at least buy me enough time to reach my weapon, if its breached at all. I did the same thing to my double entry doors going out to the back of the house. These back doors are rarely used, so the cross bar is usually in place on the back entry doors most of the time.