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.
Technology systems remain unavailable across the Fort Worth health network, forcing manual procedures and delaying records responses as the cause remains undisclosed.
The city said water remained safe as crews used manual procedures after communications failed at two water towers and multiple wastewater lift stations.
Akron Public Schools said its IT security team detected and contained a June 23 cyber incident that closed all buildings the next day, but it has not said whether data was accessed.