Jimmy John’s announced Wednesday that credit card and debit card data was stolen at about 216 stores worldwide, including the location on Marquette’s campus.

The press release stated Jimmy John’s was alerted of a possible breach in July and hired third party forensic experts to assist with the investigation. While the investigation is ongoing, the store said in a news release that the intruder stole log-in credentials from a point-of-sale vendor to access the systems between June 16 and Sept. 5.

Cards swiped in breached locations appear to have been affected by the incident. The breach did not include cards entered manually or cards used for online orders.

Staff in Marquette’s Information Technology Services said students who purchased food from the store should carefully watch their credit card statements and to change their passwords if they think their information has been stolen.

The restaurant chain has since contained the compromise, and said it would offer identify protection services to customers affected.

“Jimmy John’s has taken steps to prevent this type of event from occurring in the future, including installing encrypted swipe machines, implementing system enhancements and reviewing its policies and procedures for its third party vendors,” the news release said.

Other Wisconsin stores that were breached include locations in Oshkosh, River Falls, Sheboygan and Portage, according to a Jimmy John’s website that listed all affected stores.