Commissioners used opioid-settlement proceeds to buy cryptocurrency; the county has not disclosed whether access has been restored, what data was stolen or who carried out the attack.
The association restored card payments at its general store, but its service center remained closed through Sunday without a broader network all-clear.
OMA said ransomware affected two employee computers July 15, but access was restored that morning and it found no evidence that data or client records were compromised.
The utility switched to manual control after attackers gained remote access July 27; officials said water service, water quality and customer data were unaffected.
Davison County workers were warned not to open city emails, while Mitchell’s mayor said there was no indication the city’s email environment was affected.
The county is restoring affected systems after a technology disruption while officials investigate the cause and emergency services remain operational.