The government systmes of the City of Kingman were targeted in a cyber attack in March 2021.
The city got to know about the attack after it spread throughout the entire computer system.
However, Local and federal authorities immediately started investigating the incident.
Source: https://www.databreaches.net/az-city-of-kingman-government-computer-system-hit-by-cyberattack/
"id": "CIT1532151022",
"linkid": "city-of-kingman",
"type": "Cyber Attack",
"date": "03/2021",
"severity": "60",
"impact": "2",
"explanation": "Attack limited on finance or reputation"