MalwareHealthcareHealthcareRansomwareSupply Chain (3P Vendor)Data ExfiltratedHealth (basic)Identity (basic)PHIHighContained

MULTICARE HEALTH SYSTEM

bd_568d5164e6287de1 · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 16, 2020

Filed

Aug 21, 2020

To disclose

5 weeks

Affected

302,769state residents only

Linked

2 filings

Confidence

70%

Full breach record for MULTICARE HEALTH SYSTEM →4 incidents on file

MultiCare Health System notified Washington AG of a ransomware attack on third-party vendor Blackbaud. Attack occurred Feb-May 2020; MultiCare notified July 16, 2020. 302,769 Washingtonians affected. Data included names, addresses, DOBs, and limited healthcare info. No SSNs or financial data compromised. Blackbaud paid ransom and destroyed data copy.

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Washington clock⏱ WA AG >30d5 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 160 days

discovery → filing · 5 weeks / 36 days

Feb 7, 2020

Begins

Jul 16, 2020

Discovered

Aug 21, 2020

Filed

vs. sector median

7 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

HHS OCRbd_8046b082409e419f2020-08-22 · +1dVerified

Name: MULTICARE HEALTH SYSTEM
norm: multicare health system
Domain: multicare.org

Name: MULTICARE HEALTH SYSTEM
norm: multicare health system
Domain: multicare.org
Industry: Healthcarellm

Discovered: Jul 16, 2020
Breach occurred: Feb 7, 2020 – May 20, 2020
Undetected for: 160 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 302,769state-resident count only
Data types: Identity (basic)Health (basic)
Data elements: NameDate of birthMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 100-199dexposure 100-199d
WA-stated discovery: Found after the fact
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1195 Supply Chain Compromise
Threat actor: ExternalFinancial
Regulator citations: Third party (including law enforcement) investigation
Third party: via Blackbaud Inc.
Initial access: supply_chain

During the incident: Working closely with Blackbaud to fully understand what information was compromised
Reviewing Blackbaud's compliance and security strategy
Notifying potentially impacted individuals by email and mail
Hired cybersecurity experts to monitor the web for potential emergence of data
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(36 days from discovery to filing)
Compliance flags: WA AG >30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

Washington State AGAug 21 · first · this page

HHS OCR+1d

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/BreachM10259.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 21, 2020
Raw hash: 36e3ba55e06877d09f989c84c6c9e3e38e5f07fc7e9fdad53c01603828f03b47

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMULTICARE HEALTH SYSTEM

Victim entityMULTICARE HEALTH SYSTEM

Incidentdiscovered Jul 16, 2020

Stated responseWorking closely with Blackbaud to fully understand what information was compromised

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com