Stereo & Electronics - Factory alarm problem.

Hey guys. I am running into a problem with my factory alarm randomly going off while sitting in my driveway, has anyone else run into this? Its done it a few times now. Once last night and once this morning. At first I thought squirrel or something, but my neighbors say its happened before and i just havent heard it. Any help would be appreciated gentlemen! and ladies if any?

Mine does it but only after it rains. I'm guessing moisture is getting into the shock sensor somehow.