Sumner County Schools network breach delays opening
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Sumner County Schools discovered unauthorized network access July 20, 2026, disrupting registration and delaying the first day of school from August 4 to August 10. The district's August 3 calendar still listed registration for August 4–5 and the delayed opening, so the incident remains active. Officials have not published a completed forensic conclusion or confirmed affected data, ransomware, extortion or attribution.
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