Chipotle can't catch a break, apparently. After troublesome outbreaks of E coli at several locations in different states in 2015, the Mexican themed restaurant chain has acknowledged another sort of infection - this time on it's payment processing network.
Their website says, in part:
We believe actions we have taken have stopped the unauthorized activity, and we have implemented additional security enhancements. Our investigation is focused on card transactions in our restaurants that occurred from March 24, 2017 through April 18, 2017.
They don't give many other details, but indicate they will try to alert any affected customer.
I would check your credit card statement if applicable.