The City of Denver was affected by a ransomware attack on its cloud-based payroll service provider Ultimate Kronos Group.
The city immediately took preventive steps and implemented a backup documentation system to track city work hours, overtime, paid time off, etc.
The attack lead to some disruptions in paychecks, but the city mobilized all available resources to support its customers and minimize the effect.
Source: https://denver.cbslocal.com/2021/12/20/denver-payroll-ransomware-attack-kronos/
TPRM report: https://scoringcyber.rankiteo.com/company/city-and-county-of-denver
"id": "cit16574422",
"linkid": "city-and-county-of-denver",
"type": "Ransomware",
"date": "12/2021",
"severity": "90",
"impact": "6",
"explanation": "Attack threatening the economy of a geographical region"{'affected_entities': [{'industry': 'Public Administration',
'location': 'Denver, Colorado, USA',
'name': 'City of Denver',
'type': 'Government'}],
'description': 'The City of Denver was affected by a ransomware attack on its '
'cloud-based payroll service provider Ultimate Kronos Group. '
'The city immediately took preventive steps and implemented a '
'backup documentation system to track city work hours, '
'overtime, paid time off, etc. The attack lead to some '
'disruptions in paychecks, but the city mobilized all '
'available resources to support its customers and minimize the '
'effect.',
'impact': {'operational_impact': ['Disruptions in paychecks'],
'systems_affected': ['Payroll service']},
'response': {'containment_measures': ['Implemented a backup documentation '
'system'],
'recovery_measures': ['Mobilized all available resources to '
'support customers']},
'title': 'Ransomware Attack on Ultimate Kronos Group Affecting the City of '
'Denver',
'type': 'Ransomware'}