The Medical University of South Carolina’s call center has received more than 700 calls since Thursday morning from customers concerned about a recent data breach.

The hospital announced Thursday that one of its third-party credit card processing vendors was hacked last month, compromising the financial information for about 7,000 MUSC patients. An attorney for that company said the FBI is investigating the case. The attack is believed to have originated overseas.

MUSC spokeswoman Heather Woolwine said 478 people called for more information about the cyber attack on Thursday and an additional 240 had called as of 3 p.m. Friday.

The institution sent pre-recorded phone messages to all customers who were impacted by the data breach. Those customers have been encouraged to contact their banks and credit card companies.

The attack affected customers who paid MUSC online or over the phone with a credit or debit card between June 30 and Aug. 21.

For more information, visit academicdepartments.musc.edu/cyberinfo/ or call 792-6200.

Reach Lauren Sausser at 937-5598.