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.
A 15-hour outage affected three public websites, but 911, 311, bill payments and permit services remained available, and officials reported no intrusion or data loss.
The city said no data was taken after a Dec. 26 incident, but utility billing customers faced delayed bills, paused automatic payments and no-shutoff accommodations for weeks.
The city says malicious activity disrupted network connections and online services, but it has not identified the attack type or a full restoration date.
The city said systems were restored after a June 8 incident that affected some computer systems, but it has not identified which services were disrupted.
The Kiowa County town said its administrative email was disrupted, but no resident information, emergency services or utility operations were affected.
