Home / Disasters and Accidents / Emergency Declared as Cyberattack Hits Suisun City
Emergency Declared as Cyberattack Hits Suisun City
10 Aug
Summary
- Cyberattack disrupted IT systems, forcing network shutdown.
- Emergency dispatch and public safety operations were affected.
- City council declared a state of emergency for support.

Suisun City's IT systems were compromised by a cyberattack on Friday, prompting the city council to declare a state of emergency on Saturday. The malicious software infected systems around 5:45 a.m. Friday, disrupting critical public safety operations such as 911 routing, police, and fire dispatch. Officials shut down the entire IT network to contain the incident and preserve evidence for an ongoing federal investigation. The city has activated its Emergency Operations Center and is working with the FBI, Department of Homeland Security, and other agencies.
Despite the network outage, emergency services remain operational. Dispatch calls are being handled by Solano County, and police and fire departments continue to respond to service calls. However, online city services and internal operations are temporarily unavailable as cybersecurity experts work to investigate and restore the systems. The emergency declaration on Saturday allows the city to access emergency support and seek reimbursement for costs incurred due to the cybersecurity incident.