It’s painfully clear—burglars don’t play by any rule. Worse is when they’re disguised as movers; they’ll rob you and, to inflame the wound, be able to walk away scot free.
It’s a common advice among movers to always name what’s inside your boxes while packing. The problem is that this makes it easy for them to target your valuables. For unprofessional movers, all they need to do to rob you is open a targeted box and take out a few of your valuables before rearranging what’s left and taping the box back.