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Incident

Fred Hutchinson Cancer Center

Incident posture

Attack window
Nov 2023
Location
United States of America
Status
Historical
CIA posture
Available to members
Updated
2025-11-27 00:00

Linked entities

Victim
Fred Hutchinson Cancer Center
Threat actors
0 actors
Sources
1 source

Timeline

Occurred
Nov 2023
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

The Fred Hutchinson Cancer Center experienced a cyberattack involving unauthorized activity on limited sections of its clinical network during Thanksgiving week. The organization is assessing potential impacts to patients and employees, with forensic teams working to determine the extent of data compromise; further notifications will follow as details emerge.

Motives

Detailed motive labels are available to members.

1 motive

TTPs

Detailed technique labels are available to members.

2 techniques

Description

The Fred Hutchinson Cancer Center detected unauthorized cyber activity affecting limited portions of its clinical network during Thanksgiving week of 2023, with the incident first identified on or around November 20. Hospital staff observed anomalous behavior confined to clinical operations rather than research systems, prompting immediate internal investigations. Christina VerHeul, the organization's associate vice president of communications, publicly disclosed the breach on November 23 while emphasizing that impact assessments remained ongoing. Forensic specialists were engaged to analyze the scope of compromised data and systems, though no specific technical details about the attack vector or threat actor were released. Clinical operations continued without reported disruptions during the investigation phase.

Fred Hutch officials confirmed the breach exclusively targeted clinical network segments but did not specify whether patient records, employee data, or medical devices were affected. The center acknowledged potential risks to patient and employee information but stated definitive conclusions about data exposure required further forensic examination. No ransomware claims or extortion demands were referenced in initial disclosures. Response teams prioritized determining the breach's duration, entry points, and data exfiltration extent while maintaining clinical services. The organization committed to notifying affected individuals pending investigation results but provided no timeline for public updates or regulatory filings.

Sources

Sources available to members: 1 source.

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