Tens of thousands of St. Luke’s Health System patients’ data might be vulnerable after a cybersecurity incident involving Kaye-Smith, one of the system’s business vendors, in May. In a Wednesday news release, St. Luke’s announced that a vendor handling statement processing and billing services experienced a data breach. The health system became aware of the breach on July 6. “We have identified 31,573 individuals whose records may have been impacted by the vendor data breach,” St. Luke’s spokesperson Christine Myron told the Idaho Statesman in an email. She said no St. Luke’s networks were affected.