HackingHealthcareHealthcareCapture Stored DataData ExfiltratedCustomer Data InvolvedTargetedIdentity (basic)Government IDFinancial accountHealth (basic)PHICriticalContained

Fred Hutchinson Cancer Center

bd_b7c7ee56fd79dc24 · schema v1 · pii pii-v1

Severity

Critical

Discovered

Nov 19, 2023

Filed

Dec 22, 2023

To disclose

5 weeks

Affected · nationwide

1,694,184270,597 in this filing

Linked

14 filings

Confidence

69%

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

Fred Hutchinson Cancer Center disclosed a cyberattack on November 19, 2023, affecting up to 1.69 million individuals. Unauthorized access to clinical networks occurred between Nov 19-25, 2023, exposing PHI, SSNs, and financial data. Notifications began Dec 20, 2023, with credit monitoring offered.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d5 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 · 5 weeks / 33 days

Nov 19, 2023

Begins

Nov 19, 2023

Discovered

Dec 22, 2023

Filed

vs. sector median

6 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_00321461c9a219542023-12-22Verified
California State AGbd_055977ba69ddd4322023-12-22Verified by operator
Montana State AGbd_390649f2c75439432023-12-22Verified
Massachusetts State AGbd_632cb3e03653a6452023-12-22Verified

Show 6 more filings ↓up to 223d gap

HHS OCRbd_734a45a1ef5248522023-12-22Verified
Vermont State AGbd_12adcd78f9e863af2023-12-20 · +2dVerified by operator
HHS OCRbd_8814fc6d061ec55d2023-12-26 · +4dVerified by operator
Washington State AGbd_925ee43ceec80c672024-02-29 · +69dVerified
Montana State AGbd_939adbdc1316f7952024-02-29 · +69dVerified by operator
Illinois State AGbd_e82634db0b6646752024-08-01 · +223dVerified 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: Dec 20, 2023
Affected individuals: 1,694,184state + nationwide
Data types: Identity (basic)Government IDFinancial accountHealth (basic)PHI
Data elements: NameSocial Security numberDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoing
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 ChannelT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified Washington Attorney General in accordance with Wash. Rev. Code § 19.255.010
Initial access: exploit_public_facing

During the incident: Took steps to contain the activity
Began an investigation with the assistance of a third-party forensic firm
Established a dedicated call center
Offered complimentary membership to credit monitoring and identity protection services
Changes made: Continuously updating and enhancing systems to protect the data it maintains
Implemented additional defensive tools and increased monitoring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(33 days from discovery to filing)
Compliance flags: WA AG >30d
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

Oregon State AG+2d

California State AG+2d

Montana State AG+2d

Massachusetts State AG+2d

HHS OCR+2d

Washington State AG+2d · this page

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA27386.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 22, 2023
Raw hash: 2d9cb7810b86d98f69d90e30a19b3601b20a7cd41e9e646483d7535eaad40520

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

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com