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Cyberattack cripples Chelan County government network systems over holiday weekend

Mynorthwest • May 25, 2026

The Chelan County network systems were hacked by malware over the weekend, the county confirmed.

According to a warning from the Chelan County Emergency Management to both residents and government employees, the hack impacted “all departments within Chelan County government.”

“As a precaution, we have shut down our network, computers, and telephone system across all departments,” Chelan County stated . “Our IT department is working closely with our security partners to bring the system back up; however, we have no timeline on when this will happen.”

Chelan County IT first detected the malware at approximately 10 a.m. Sunday. Due to the holiday, the soonest update will be on Tuesday.

“At this time, we do not know the extent or the full scope of the damage,” the county wrote.

The county is additionally trying to determine if any personal data was compromised.

For emergencies, residents are asked to Rivercom 911.

This is a developing story, check back for updates

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Chelan County Government Systems Compromised by Malware Attack Chelan County, Washington, experienced a malware attack that affected all government departments, prompting officials to shut down networks, computers, and phone systems. The malware was detected by the IT department at 10 a.m. on May 24, 2026. The county's Emergency Management confirmed that the attack impacted all departments and stated that the full extent of the damage is still unknown. The IT team is collaborating with security partners to restore systems, but no timeline for recovery has been established. Emergency services remain operational, and residents are advised to contact Rivercom 911 for urgent assistance. Updates are expected on May 26, 2026, due to the holiday weekend. 3 sources 52

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Cyberattack cripples Chelan County government network systems over holiday weekend

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