CSIDB logo
Incident

Anna Jaques Hospital

Incident posture

Attack window
Dec 2023
Location
United States of America
Status
Historical
CIA posture
Available to members
Updated
2026-01-21 12:03

Linked entities

Victim
Anna Jaques Hospital
Threat actors
0 actors
Sources
1 source

Timeline

Occurred
Dec 2023
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

A cyberattack compromised the hospital's computer systems, including electronic health records and networked functions, prompting an immediate shutdown and engagement of cybersecurity professionals. The incident caused significant operational disruptions, including ambulance diversions to nearby hospitals, service delays, and ongoing recovery efforts. Staff utilized manual processes for patient care while the union representing nurses raised clinical concerns about inadequate communication from administration regarding care protocols and staffing. The union also formally alerted health authorities about the unresolved system outages and potential risks to patient safety.

Motives

Detailed motive labels are available to members.

0 motives

TTPs

Detailed technique labels are available to members.

3 techniques

Description

On December 24, 2023, Anna Jaques Hospital experienced a cyberattack that compromised its computer systems, forcing the shutdown of all networked functions including electronic health records. The hospital detected the intrusion and immediately secured its environment, engaging external cybersecurity professionals to investigate the incident. By Christmas Day, the hospital diverted ambulance arrivals away from its emergency department to nearby facilities including Exeter Hospital and Beverly Hospital within the Beth Israel-Lahey Health system, citing patient safety concerns. Newburyport Mayor Sean Reardon was notified of the electronic health record system outage on December 25. Ambulance diversions continued until the afternoon of December 26, when the hospital resumed accepting emergency patients via ambulance transport. Hospital administrators confirmed the incident as a cyberattack but declined to specify whether it was targeted or provide details about the attackers' methods.

The system-wide network outage persisted through at least December 28, with recovery efforts ongoing and no estimated restoration timeline provided to staff. Clinical operations faced significant disruptions, with nurses reporting reliance on manual processes for patient care documentation. The Massachusetts Nurses Association union submitted urgent questions to hospital administration regarding patient information handling and staffing adequacy during the crisis, but received no substantive response by December 28. The union escalated concerns to the Massachusetts Department of Public Health's Bureau of Health Care Safety and Quality, documenting the complete network shutdown and lack of restoration prognosis. Patient service delays continued throughout the incident period, though hospital leadership maintained that clinical care standards were preserved. The cyberattack occurred during ongoing labor tensions, with nurses' union contracts set to expire December 31, 2023, following months of disputes over working conditions.

Sources

Sources available to members: 1 source.

CSIDB