Get Permission Nebraska Medicine and the University of Nebraska Medical Center have just begun notifying 219,000 individuals of a hacking incident that was discovered last September. The lag between breach discovery and notification illustrates the difficulties organizations often face in incident response, some security experts say. Nebraska Medicine/UNMC says in a statement posted earlier this month that on Sept. 20, 2020, it identified unusual network activity that affected some of its IT systems. Nebraska Medicine/UNMC then initiated incident response protocols to minimize any disruption to patients and "isolated potentially impacted devices and shut off select systems as a precaution," the statement says. "We also initiated an investigation, computer forensic experts were engaged to assist our ongoing investigation and we notified law enforcement."