Ransomware disrupts Addison Northwest School District systems

A ransomware attack discovered in early January 2025 locked Addison Northwest School District officials, teachers and employees out of district servers and led administrators to shut down internet connectivity across the district's three schools and central office. Internet and email services remained unavailable for several days while servers were restored from backups. The evidence supports material organizational disruption, although the available reporting does not establish a specific interruption of classroom instruction.