I do not keep anything of value in my Jeep anymore because mine was broken into right after I moved to NC. The only thing taken was about $3 in change from the center console and the drop-in tray (IS IMPOSSIBLE TO REPLACE IT SEEMS

). Aside from your Jeep getting straight up stolen I would say start with keeping it unlocked. I know this sounds backassward but this way the thieves won't have to cut the soft top (if you have one) trying to get in only to find that there was nothing there to begin with if you keep it empy. Other than that, there are plenty of security options out there that you can buy. I do not have any experience with them since my rig is bare bones but they look promising. Just my way of thinking. Sorry I couldn't be more helpful...I need sleep.