HackingHealthcareHealthcareStolen CredentialsData ExfiltratedCustomer Data InvolvedPHIIdentity (basic)Government IDHealth (basic)Financial accountMediumContained

Fred Hutchinson Cancer Center

bd_12adcd78f9e863af · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 19, 2023

Filed

Dec 20, 2023

To disclose

4 weeks

Affected

Not disclosed

Linked

14 filings

Confidence

65%

Full breach record for Fred Hutchinson Cancer Center →4 incidents on file

Fred Hutchinson Cancer Center detected unauthorized activity on its clinical network on November 19, 2023. An investigation determined that an unauthorized third party accessed the network and obtained files between November 19 and November 25, 2023. Affected data included names, addresses, SSNs, health insurance info, and clinical records. The organization contained the activity, engaged forensic investigators, and offered identity protection services.

J jump to incidentP pin to compareR raw source

Vermont clock⏱ VT AG >14 bday4 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 4 weeks / 31 days

Nov 19, 2023

Begins

Nov 19, 2023

Discovered

Dec 20, 2023

Filed

vs. sector median

7 wks faster

This filing is one of 14 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Oregon State AGbd_00321461c9a219542023-12-22 · +2dVerified
California State AGbd_055977ba69ddd4322023-12-22 · +2dVerified by operator
Montana State AGbd_390649f2c75439432023-12-22 · +2dVerified
Massachusetts State AGbd_632cb3e03653a6452023-12-22 · +2dVerified

Show 6 more filings ↓up to 225d gap

HHS OCRbd_734a45a1ef5248522023-12-22 · +2dVerified
Washington State AGbd_b7c7ee56fd79dc242023-12-22 · +2dVerified by operator
HHS OCRbd_8814fc6d061ec55d2023-12-26 · +6dVerified by operator
Washington State AGbd_925ee43ceec80c672024-02-29 · +71dVerified
Montana State AGbd_939adbdc1316f7952024-02-29 · +71dVerified by operator
Illinois State AGbd_e82634db0b6646752024-08-01 · +225dVerified by operator

Showing first 10 of 13 linked disclosures.

Name: Fred Hutchinson Cancer Center
norm: fred hutchinson cancer center
Domain: fredhutch.org

Name: Fred Hutchinson Cancer Center
norm: fred hutchinson cancer center
Domain: fredhutch.org
Industry: Healthcarellm

Discovered: Nov 19, 2023
Breach occurred: Nov 19, 2023 – Nov 25, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)Government IDHealth (basic)Financial account
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Took steps to contain the activity
Began an investigation with the assistance of a third-party forensic firm
Implemented additional defensive tools
Increased monitoring
Offering complimentary Experian IdentityWorks Credit 3B membership
Changes made: Continuously updating and enhancing systems to protect data
Implemented additional defensive tools
Increased monitoring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(31 days from discovery to filing)
Compliance flags: VT AG >14 bday
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 7 states

View merged incident ↗

Vermont State AGDec 20 · first · this page

Oregon State AG+2d

California State AG+2d

Montana State AG+2d

Massachusetts State AG+2d

HHS OCR+2d

Washington State AG+2d

HHS OCR+6d

Washington State AG+71d

Montana State AG+71d

Illinois State AG+225d

Pattern: first filing Dec 20 (VT), last Aug 1 (IL) — a 225-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 13 — the full spread may be wider.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://ago.vermont.gov/document/2023-12-20-fred-hutchinson-cancer-center-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 20, 2023
Raw hash: 37cf8d8963bf24b4a3022293e16cdd3ddad2decd8dc735258687dab0096653b5

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityFred Hutchinson Cancer Center

Victim entityFred Hutchinson Cancer Center

Incidentdiscovered Nov 19, 2023

Stated responseTook steps to contain the activity

ComplianceVT AG >14 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov