Cyberattack Disrupts Suisun City’s 911 System

Hooded person using a laptop surrounded by email icons — Photo: Production Perig / Shutterstock

Suisun City’s emergency call system was thrown into turmoil after a cyberattack forced officials to shut down the city network and declare a state of emergency.

Quick Take

City leaders said malicious software hit Suisun City IT systems early Friday and disrupted 911 routing, police dispatch, and fire dispatch.
Officials said dispatchers moved calls through the Solano County dispatch center, while police and firefighters kept responding to calls.
The city council declared a state of emergency on Saturday to speed access to support and help recover costs.
The incident added to a growing pattern of cyberattacks on public safety systems that can keep services running in fallback mode while still slowing them down.

Network Shutdown Hits Public Safety Services

Suisun City said malicious software infected and compromised municipal information technology systems at about 5:45 a.m. Friday. The city then shut down its entire network to contain the threat and protect evidence for investigators. Reporting said the disruption reached emergency dispatch, city records, online services, and internal operations. City officials also said there was no imminent threat to the public at the time of their update.

The city’s response showed how local governments now handle major cyber incidents in real time. Dispatchers kept taking calls through the Solano County dispatch center, and Suisun City police officers and firefighters continued responding to calls for service. That fallback setup did not erase the problem. It did show that emergency crews could stay active even while the city’s own digital systems were partly knocked out.

Why the Emergency Declaration Mattered

The Suisun City Council voted Saturday morning to declare a state of emergency during a special meeting. According to reporting, the move lets the city move faster on emergency support and recover costs tied to the attack. The declaration also signals that the city treated the incident as a serious public safety event, not just a routine technology outage. For residents, that matters because 911 systems are among the first services people expect to work without delay.

This case fits a wider pattern seen in other public sector cyber incidents. Federal and media reports have shown that emergency services often shift to manual dispatching or alternate centers when computer-aided systems fail, which preserves basic service but can reduce speed and visibility. Suisun City’s experience shows the same tension: officials could say public safety stayed active, while the underlying network failure still disrupted how the city normally answers the phone, tracks work, and manages records.

What Officials Have Said So Far

Officials have not publicly identified the attacker or said exactly how the malware entered the network. They have also not said whether any data was stolen, though investigators from outside agencies were reported to be involved. For now, the most important confirmed facts are simple: the city lost normal network access, emergency dispatch had to be rerouted, and the city used emergency powers to deal with the fallout.

The Suisun City Council declared a state of emergency Saturday after a cyberattack that shut down computer systems including 911 public safety operations.https://t.co/i725Z63gJ6 pic.twitter.com/JHzhxBrOHR

— NBC Bay Area (@nbcbayarea) August 9, 2026

The broader concern goes beyond one California city. Public safety systems are now a favorite target because even a short outage can shake confidence and force cities into backup mode. When that happens, residents see the same pattern again and again: officials promise continuity, but the public learns how fragile the basic machinery of local government can be when one breach reaches the wrong system.