Mike Mainiero was awakened at around 2 a.m. on July 19 by someone on his incident response team. Catholic Health’s IT systems and those of its partners were crashing, with one of its radiology vendors being among the first to experience technical difficulties. With nearly 16,000 employees, the Long Island-based healthcare system supports six acute care hospitals, three nursing homes, a home health service, a hospice, and a network of physician practices. It has a triage team that is set up to assemble IT staff and establish a command center for cybersecurity and other incidents, says Mainiero,…