Winona County security incident history
Hacking, data breaches and other security incidents involving Winona County, with related coverage.
Incidents: 2 · Most recent
Winona County Paid $128,000 After January Ransomware Attack
Impact: Network and some administrative services halted, $128,000 paid and residents' data leaked
Winona County in the US was hit by a ransomware attack in January 2026 that paralysed its network, and it paid $128,000 to resolve it. It was attacked again in April, which halted some administrative services and led to a data leak. The National Guard helped with the response, and in October the county began notifying residents whose information was stolen in the spring attack.
Related reports: 16 · last report →Winona County hit by ransomware attack
Winona County in the US was hit by a ransomware attack. The specific date, the scale of damage and the response have not been confirmed.
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