HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDHealth (basic)PHICriticalContained

Sea Mar Community Health Centers

bd_28c6c88d4e63dbaf · schema v1 · pii pii-v1

Severity

Critical

Discovered

Jun 24, 2021

Filed

Nov 15, 2021

To disclose

21 weeks

Affected

628,569state residents only

Linked

13 filings

Confidence

67%

Full breach record for Sea Mar Community Health Centers →2 incidents on file

Sea Mar Community Health Centers notified Washington AG of a cyberattack where data was copied from its digital environment between Dec 2020 and Mar 2021. Discovered June 24, 2021. Affected 628,569 Washington residents with PII, PHI, SSNs, and medical info. Notified Oct 29, 2021. FBI notified.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d21 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 · 205 days

discovery → filing · 21 weeks / 144 days

Dec 1, 2020

Begins

Jun 24, 2021

Discovered

Nov 15, 2021

Filed

vs. sector median

+10 wks slower

This filing is one of 13 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitemarketobd_5372c3f688c215a52021-12-07 · +22dVerified by operator

Regulatory filings (9) · sorted by filing gap

Maine State AGbd_2aa815ce51fd0c522021-11-05 · +10dVerified by operator
California State AGbd_a493984f5cc28f8f2021-11-05 · +10dVerified by operator
Massachusetts State AGbd_fa18b2f59e7db5e62021-11-05 · +10dVerified
Oregon State AGbd_19e521d2b77f3b2b2021-11-01 · +14dVerified by operator

Show 5 more filings ↓up to 137d gap

New Hampshire State AGbd_f1e2ea1db4de0a762021-11-01 · +14dVerified
HHS OCRbd_2e8ec6ee5fe5cc842021-10-30 · +16dVerified
Illinois State AGbd_d7143ee8245ff1222022-01-01 · +47dVerified by operator
New Hampshire State AGbd_6ef493c6d3a6b3df2022-04-01 · +137dVerified by operator
California State AGbd_d24e2dca3a190bb62022-04-01 · +137dVerified by operator

Showing first 10 of 12 linked disclosures.

Name: Lewis Brisbois Bisgaard & Smith, PLLC
norm: lewis brisbois bisgaard smith

Name: Sea Mar Community Health Centers
norm: sea mar community health centers
Industry: Healthcarellm

Discovered: Jun 24, 2021
Breach occurred: Dec 1, 2020 – Mar 31, 2021
Undetected for: 205 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 29, 2021
Affected individuals: 628,569state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PHI
Data elements: NameSocial Security numberDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified Washington Attorney GeneralReported to the Federal Bureau of Investigation

During the incident: Engaged leading, independent cybersecurity experts for assistance
Reported this incident to the Federal Bureau of Investigation
Offered complimentary identity protection services through Kroll
Changes made: Working with cybersecurity experts to identify areas in which it can further improve the security of its network
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 weeks(144 days from discovery to filing)
Compliance flags: WA AG >90d
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 · 10 filings · 7 states

View merged incident ↗

HHS OCROct 30 · first

Oregon State AG+2d

New Hampshire State AG+2d

Maine State AG+6d

California State AG+6d

Massachusetts State AG+6d

Washington State AG+16d · this page

Illinois State AG+63d

New Hampshire State AG+153d

California State AG+153d

Pattern: first filing Oct 30 (WA), last Apr 1 (CA) — a 153-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 12 — 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/BreachM11218.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 15, 2021
Raw hash: 65f20e2b840b954a475b683cd251be6256ba322a15babb1ad5c8d28ea0418fd4

Linked disclosures

Ransomware claims (1)

Regulatory filings (9) · sorted by filing gap

Reporting entityLewis Brisbois Bisgaard & Smith, PLLC

Victim entitySea Mar Community Health Centers

Incidentdiscovered Jun 24, 2021

Stated responseEngaged leading, independent cybersecurity experts for assistance

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com