PSA - Smashburger Gift Cards have been / are being hacked. I had 2x $100 GCs, physical direct from corporate always in my possession, that were used in other states, CA and MA and likely others. I'm working with customer service now to try to get them re-issued, so we'll see how good they are - they sent the transactions list which is obviously hacked. One transaction was the complete $100 in one shot in Attleboro, MA.
If you have gift cards from Smashburger, you might want to check your balance.