Our worries might be a little misplaced. Everything that involves money is a security concern. It doesn't matter whether you're coming from a fiat ATM or a Bitcoin ATM or a physical bank or a remittance center. As a matter of fact, a robber is better off following somebody coming from a fiat ATM or a bank because it's certain that the money is there. All he/she just has to do is to point the knife and he/she gets the money right away. Whereas, the one coming from a Bitcoin ATM isn't carrying actual coins with him/her. The robber might have to torture him/her first. That's an additional hassle.