United States
USA
Ransomware disruption forces Glendale Unified School District to change teaching and examinations
On or before 6 December 2023, a ransomware incident at Glendale Unified School District led officials to disable district computers and network services. Staff and pupils were instructed not to use school computers and Chromebooks. The interruption affected instruction and assessments: teachers shifted to paper-based examinations and some tests were postponed, although schools continued operating.
75
Estimated severity
75 / 100
94
Source reliability
94 / 100
Approximate Date
2023-12-06
Targeted Company
GLENDALE UNIFIED SCHOOL DISTRICT
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
California · United States
Operational Impact
Duration
No information
Financial impact (USD M)
No information
Impact types
Planning or scheduling disruptionService degradation
Affected sectors
Education & Research
Affected departments
Information Technology
Attack Profile
Attack types
Ransomware
Attributed threat actors
MEDUSA
Sources
Incident Sources
crescentavalleyweekly.comhttps://www.crescentavalleyweekly.com/news/12/06/2023/from-gusd/crescentavalleyweekly.comhttps://www.crescentavalleyweekly.com/news/12/14/2023/cyber-security-issue-results-in-gusd-teachers-returning-to-the-90s/myglendale.comhttps://myglendale.com/2023/12/gusd-systems-recovering-from-ransomware-impact/