United States
USA
Cybersecurity incident disrupts Heywood Healthcare hospital operations
A cybersecurity incident affecting Heywood Healthcare's network disrupted Heywood Hospital and Athol Hospital in October 2025. The hospitals entered Code Black diversion status, ambulances were redirected, and digital systems including communications and some clinical-support functions were affected while staff continued providing care under reduced capabilities.
84
Estimated severity
84 / 100
96
Source reliability
96 / 100
Approximate Date
12/10/2025
Targeted Company
HEYWOOD HEALTHCARE
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
Massachusetts · United States
Operational Impact
Duration
No information
Financial impact (USD M)
No information
Impact types
Service unavailabilityService degradationCapacity reductionTransportation disruptionOperational disruption
Affected sectors
Healthcare & Public Health
Affected departments
Information Technology
Attack Profile
Attack types
No information
Attributed threat actors
No information
Sources
Incident Sources
atholdailynews.comhttps://atholdailynews.com/2025/10/17/phone-service-disruptions-continue-at-heywood-healthcare/boston.comhttps://www.boston.com/news/health/2025/10/23/mass-hospitals-hit-by-cyberattack-that-caused-network-outage/hipaajournal.comhttps://www.hipaajournal.com/heywood-athol-hospitals-cyberattack/atholdailynews.comhttps://atholdailynews.com/2026/01/06/heywood-hospital-contains-cybersecurity-incident-investigation-ongoing/