HackingHealthcareHealthcareStolen CredentialsCustomer Data InvolvedTargetedIdentity (basic)Government IDPHIHealth (basic)MediumContained

Western Washington Medical Group

bd_3194136d48dfc6e6 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 26, 2023

Filed

Nov 8, 2023

To disclose

11 weeks

Affected

677state residents only

Linked

5 filings

Confidence

65%

Full breach record for Western Washington Medical Group →2 incidents on file

Western Washington Medical Group notified patients of a network security incident on August 26, 2023, where an unauthorized party gained access to the network. Personal information including names, SSNs, DOBs, and PHI was potentially accessed. WWMG secured the network, engaged forensic investigators, and offered credit monitoring.

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Incident timeline

discovery → filing · 11 weeks / 74 days

Aug 26, 2023

Begins

Aug 26, 2023

Discovered

Nov 8, 2023

Filed

vs. sector median

+2 wks slower

This filing is one of 5 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_7f62435f119dd5842023-11-08Verified
Washington State AGbd_b8a7159ff331f4e52023-11-08Verified
California State AGbd_c7f523f67fade61f2023-11-08Verified
HHS OCRbd_ff8ede5de29714b02023-10-26 · +13dVerified

Name: Western Washington Medical Group
norm: western washington medical

Name: Western Washington Medical Group
norm: western washington medical
Industry: Healthcarellm

Discovered: Aug 26, 2023
Breach occurred: Aug 26, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 677state-resident count only
Data types: Identity (basic)Government IDPHIHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Initial access: valid_credentials

During the incident: Immediately shut off all access to the network
Engaged a specialized third-party forensic incident response firm to assist with securing the network environment and investigating the extent of unauthorized activity
Offering a complimentary access to Experian Identity Works
Engaged appropriate experts to assist us in conducting a full review of our security practices and systems
Changes made: Made immediate enhancements to our systems, security and practices
Ensuring that enhanced security protocols are in place going forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(74 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

HHS OCROct 26 · first

Massachusetts State AG+13d

Washington State AG+13d

California State AG+13d

Montana State AG+13d · this page

Pattern: first filing Oct 26 (MS), last Nov 8 (MT) — a 13-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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-855.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 8, 2023
Raw hash: d5a232fc6eb79486be127e5b4799edceee1a646475061e14250b461f30f592f2

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityWestern Washington Medical Group

Victim entityWestern Washington Medical Group

Incidentdiscovered Aug 26, 2023

Stated responseImmediately shut off all access to the network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov