Large public R-12 school in Adelaide's south suffered a major network intrusion that completely crippled internal operations. The school's entire digital infrastructure was forced offline as a containment measure, taking learning management portals, administrative databases, and communications channels down. While the system blackout severely impacted day-to-day teaching workflows, the school remained open with backup analog processes while forensic teams worked to isolate the perimeter, determine the scope of data exposure, and systematically rebuild the network environment.