Yes, I was referring to post-security thieves. I understand there are risks to displaying a lot of cash at the checkpoint, but I'm wondering if one of these risks is to get your wallet, briefcase or laptop lifted. I can just imagine being casually followed by somebody who has booked a ticket specifically for the purpose of stealing things.

I've been in airports where you can go from the waiting area, to the general part of the airport (before security) without anybody noticing. It would be theoretically to steal, pass the item onto a willing companion who is in the general area and go back through security, looking for a mark. I've actually gone from post-security to pre-security multiple times on the same flight, because I was supposed to fly out with somebody and they were late. I actually ended up boarding the plane and my buddy showed up with a few minutes to spare.