Social EngineeringHealthcareHealthcarePhishingStolen CredentialsData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedHealth (basic)Identity (basic)Government IDPHIPIIHighContained

Emergency Responders Health Center

bd_99e172bc4571c3ac · schema v1 · pii pii-v1

Severity

High

Discovered

Apr 11, 2025

Filed

Sep 26, 2025

To disclose

24 weeks

Affected · nationwide

1,528526 in this filing

Linked

3 filings

Confidence

70%

Full breach record for Emergency Responders Health Center →

Emergency Responders Health Center (ERHC) reported a cybersecurity event involving unauthorized access to email accounts via phishing. The incident occurred between December 11, 2024, and April 11, 2025, and was discovered on April 11, 2025. ERHC engaged forensic investigators, secured accounts, and notified 1,528 individuals (526 in Washington) whose names, DOBs, SSNs, driver's licenses, and medical/insurance info were potentially exposed. Notifications were mailed September 26, 2025, with credit monitoring offered.

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Washington clock✗ WA AG >90d24 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 · 121 days

discovery → filing · 24 weeks / 168 days

Dec 11, 2024

Begins

Apr 11, 2025

Discovered

Sep 26, 2025

Filed

vs. sector median

+11 wks slower

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

HHS OCRbd_44018f6a3375f0002025-09-26Candidate
Montana State AGbd_ebe03a6262b0cd1b2025-09-26Verified

Name: Wilson, Elser, Moskowitz, Edelman & Dicker LLP
norm: wilson elser moskowitz edelman dicker
Domain: wilsonelser.com

Name: Emergency Responders Health Center
norm: emergency responders health center
Domain: er-hc.org
Industry: Healthcarellm

Discovered: Apr 11, 2025
Breach occurred: Dec 11, 2024 – Apr 11, 2025
Undetected for: 121 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 26, 2025
Affected individuals: 1,528state + nationwide
Data types: Identity (basic)Government IDHealth (basic)PII
Data elements: NameSocial Security numberDriver's licence numberDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 100-199dexposure 100-199d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified Washington Attorney General
Initial access: phishing_link

During the incident: Secured the affected email account
Engaged third-party cybersecurity specialists to conduct a comprehensive forensic investigation
Performed an extensive and detailed review of the impacted accounts
Finalized the list of individuals to notify
Mailed notification letters to affected individuals
Provided notified individuals complimentary offers for twelve (12) months of credit monitoring and identity theft restoration services
Changes made: Implementing additional technical safeguards
Enhanced security measures
Updated policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(168 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 · 3 filings · 3 states

View merged incident ↗

HHS OCRSep 26 · first

Montana State AGSep 26 · first

Washington State AGSep 26 · first · this page

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/BreachA34758.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 26, 2025
Raw hash: a2f75f7c7c2a8b6dd3f9dc0390ddbd73179a19dc32a8fb4b45aece1f2326c0a7

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityWilson, Elser, Moskowitz, Edelman & Dicker LLP

Victim entityEmergency Responders Health Center

Incidentdiscovered Apr 11, 2025

Stated responseSecured the affected email account

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com