Best security system in the world.

[Lugo]

 

[mean mr.mustard]

I saw not one security system.

I recommend remotely linked cameras accompanied by dogs and guns.

But I will admit that nothing seems cheaper than nothing.

 

[madalasatori]

Iron bars are a pretty good deterrent too

 

[Shockwavevivo]

One system that comes to mind is the one offered by Vivint.