United States
USA
Jefferson School District 251 ransomware forces school closure and technology downtime
Jefferson School District 251 discovered ransomware on its network in early February 2025. The attack disabled much of the district's technology and phone service, forced teachers to alter instruction, and led the district to cancel school on 6 February and parent-teacher conferences.
67
Estimated severity
67 / 100
90
Source reliability
90 / 100
Approximate Date
04/02/2025
Targeted Company
JEFFERSON SCHOOL DISTRICT 251
Targeted Company Supply Chain Impact
Distribution & Fulfillment
Procurement & Sourcing
Production & Manufacturing
Sales (Retail & Ecommerce)
Warehousing
Service Delivery
Unrecognized Impact
Supply Chain Relations
No information
Geographic Impact
Country Targeted Company
Other Affected Countries
No other affected countries reported
Target country
United States
Affected countries
United States
Impacted regions
Idaho · United States
Operational Impact
Duration
No information
Financial impact (USD M)
No information
Impact types
Operational disruptionService unavailability
Affected sectors
Education & Research
Affected departments
Information Technology
Attack Profile
Attack types
Ransomware
Attributed threat actors
No information