Hey guys - 2006 G35x Sedan

the past few days, my alarm has been going off randomly outside of my apartment. i've had the car since march and this is the first i've noticed it.

i can look out my window and see my car when it happens, so i know that no one is bumping my car or (worse) trying to break into it.

I recently had my DD head unit professionally installed. think they could have done something to screw up my alarm?

i have an appointment to have the dealer look at it in the morning tomorrow, i just wanted to see if you all might know something about it incase the dealer can't figure it out

thanks!