Hi, Hightower...
The HAH (and either all EXs, or all EX-V6s) comes with a 'security' system. What this consists of is a door entry monitoring system - if the doors are opened while locked, the horn will sound and the lights will flash (to test this, roll down the windows, get out of the car, press the 'lock' button on the key, then reach in and pull up the lock plunger / open the door).
However, there's no trunk or hood protection, no window glass protection, etc. Considering that the system could be defeated by merely pulling the wire for the horn, it's really not the best, compared to what you can get aftermarket. However, it's good enough to qualify for 5% insurance discount with *my* carrier, at least (State Farm), when the starter immobilizer is taken into account with it.
The car also has a security system built into the radio (& navi, if you have that). If someone should remove that component, a code has to be entered for each of them before they'll be operable. It also kicks in anytime the 12v storage battery is disconnected.
I don't really live in a high-crime area, so I don't think too much about improving on the factory setup (but it certainly can be done). Were I to still live in Chicago proper, I'd have an alarm on this car for sure - maybe even a LoJack (although the GPS in the car allows it to be tracked, were there a process by which local law enforcement could provide the service, if asked (I'm sure they can, just not for 'consumer' benefit.)) But if you pulled the DVD, you might be able to defeat that, as well
