I bought something from Target in this window with a credit card (Wells Fargo).

I called them up to proactively report it stolen - the problem is they will immediately deactivate your current card and it takes 7-10 business days for the new one to show up. It is not possible to get a 2nd card number without deactivating the first (to avoid a no-card for 2 weeks situation). Or you can have them overnight it to you for $16.

Kind of annoying to pay $16 for a merchant error, or to not have your primary card for 2 weeks during the holiday season (and also the card you use to pay all service bills like cable tv, internet, city/trash/water etc).

Ultimately I decided to do nothing and just keep a close eye on account activity until January when it is less inconvenient to wait for the new one.