Overview
- Malicious software infected Suisun City’s information technology systems around 5:45 a.m. Friday, triggering the city’s decision to take its network offline.
- Officials shut down the entire IT network to contain the threat, activated the Emergency Operations Center, and routed 911 calls through the Solano County dispatch center so police and fire units could keep responding.
- The Suisun City Council met in a special session and unanimously declared a state of emergency Saturday to speed access to mutual aid and recover costs tied to the cyber incident.
- The city is working with federal and state partners including the FBI, Department of Homeland Security and the California Office of Emergency Services on an active investigation, and officials have not yet identified how the malware entered systems or who was responsible.
- Many online city services, municipal records and internal operations remain unavailable with no timeline for full restoration, underscoring the limited cybersecurity resources of smaller municipalities and broader federal warnings about threats to local infrastructure.