MalwareHealthcareHealthcareRansomwareData ExfiltratedCustomer Data InvolvedRansom DemandedIdentity (basic)Government IDHighContained

MULTICARE HEALTH SYSTEM

bd_77989f71442250e6 · schema v1 · pii pii-v1

Severity

High

Discovered

Jun 2, 2022

Filed

Jul 25, 2022

To disclose

8 weeks

Affected

22,679state residents only

Linked

2 filings

Confidence

69%

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

Kaye-Smith Enterprises, Inc. reported a ransomware attack affecting MultiCare Health System, Inc. employee data. The incident occurred May 18–June 2, 2022, and was discovered on June 2, 2022. 22,679 Washington residents received notice on October 25, 2022. Data exposed included names, addresses, and SSNs. Kaye-Smith engaged law enforcement and enhanced security.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d8 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 · 15 days

discovery → filing · 8 weeks / 53 days

May 18, 2022

Begins

Jun 2, 2022

Discovered

Jul 25, 2022

Filed

vs. sector median

5 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

Maine State AGbd_030edbbc365276bf2022-12-12 · +140dVerified by operator

Name: Kaye-Smith
norm: kaye smith

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

Discovered: Jun 2, 2022
Breach occurred: May 18, 2022 – Jun 2, 2022
Undetected for: 15 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 25, 2022
Affected individuals: 22,679state-resident count only
Data types: Identity (basic)Government ID
Data elements: NameSocial Security number
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified Office of the Attorney General, Washington

During the incident: Engaged outside experts to help investigate suspicious activity
Notified federal law enforcement
Deployed enhanced security measures and endpoint monitoring and detection
Offering 2 years of Equifax Credit Watch Gold
Changes made: Enhanced security measures and monitoring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(53 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 · 2 states

View merged incident ↗

Washington State AGJul 25 · first · this page

Maine State AG+140d

Pattern: first filing Jul 25 (WA), last Dec 12 (ME) — a 140-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/BreachM15779.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 25, 2022
Raw hash: 55703640d00b6d8e814f0995fbc6869ee0d438a57641c89e697644e07e60f60d

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityKaye-Smith

Victim entityMULTICARE HEALTH SYSTEM

Incidentdiscovered Jun 2, 2022

Stated responseEngaged outside experts to help investigate suspicious activity

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com