HackingHealthcareHealthcareStolen CredentialsData ExfiltratedCustomer Data InvolvedDownstream VictimsPIIIdentity (basic)Government IDHighContained

BAYMARK HEALTH SERVICES, INC.

bd_52c70a5301f6009f · schema v1 · pii pii-v1

Severity

High

Discovered

Oct 11, 2024

Filed

May 2, 2025

To disclose

29 weeks

Affected

5,460state residents only

Linked

16 filings

Confidence

65%

Full breach record for BAYMARK HEALTH SERVICES, INC. →2 incidents on file

BayMark Health Services, Inc. notified the New Hampshire Attorney General of a security incident affecting 5,460 NH residents. Unauthorized access occurred between Sept 24 and Oct 14, 2024. BayMark detected the incident on Oct 11, 2024, and confirmed patient data was involved on March 20, 2025. Notifications were mailed on May 2, 2025, offering credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d29 weeks discovery → filing

Incident timeline

undetected · 17 days

discovery → filing · 29 weeks / 203 days

Sep 24, 2024

Begins

Oct 11, 2024

Discovered

Mar 20, 2025

Scope determined

May 2, 2025

Filed

vs. sector median

+17 wks slower

This filing is one of 16 about the same incident.View merged incident

A leak claim by ransomhub about this victim predates this filing by 215 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Oregon State AGbd_0773210a4cd26ea62025-05-02Verified
Indiana State AGbd_1cedfa4d4dcc2eaa2025-05-02Verified
Maine State AGbd_9433a040cd8602212025-05-02Verified
Washington State AGbd_d75ef725e07d4c8d2025-05-02Verified

Show 6 more filings ↓up to 114d gap

California State AGbd_d9bc679cc6a12d272025-05-02Verified
Nebraska State AGbd_e672487f946f1c322025-05-02Verified
Vermont State AGbd_fea57e1ef45f00b72025-05-02Verified
HHS OCRbd_1556e1ab2237060e2025-01-08 · +114dVerified by operator
Nebraska State AGbd_4365a1babe67b2d72025-01-08 · +114dCandidate
California State AGbd_e84759092a766ea52025-01-08 · +114dVerified

Showing first 10 of 15 linked disclosures.

Name: BAYMARK HEALTH SERVICES, INC.
norm: baymark health
Domain: baymark.com

Name: BAYMARK HEALTH SERVICES, INC.
norm: baymark health
Domain: baymark.com
Industry: Healthcarellm

Discovered: Oct 11, 2024
Breach occurred: Sep 24, 2024 – Oct 14, 2024
Undetected for: 17 daysoccurrence → discovery
Materiality determined: Mar 20, 2025
Notification sent: May 2, 2025
Affected individuals: 5,460state-resident count only
Data types: PIIIdentity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement
Initial access: valid_credentials

During the incident: Took steps to secure its systems
Launched an investigation with the assistance of third-party forensic experts
Notified law enforcement
Changes made: Implemented additional safeguards and technical security measures to further protect and monitor our systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 weeks(203 days from discovery to filing)
Compliance flags: Leak >180d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 9 states

View merged incident ↗

HHS OCRJan 8 · first

Nebraska State AGJan 8 · first

California State AGJan 8 · first

Oregon State AG+114d

Indiana State AG+114d

Maine State AG+114d

Washington State AG+114d

California State AG+114d

Nebraska State AG+114d

Vermont State AG+114d

New Hampshire State AG+114d · this page

Pattern: first filing Jan 8 (TX), last May 2 (NH) — a 114-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 15 — 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://mm.nh.gov/files/uploads/doj/remote-docs/baymark-health-20250502.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 2, 2025
Raw hash: a57775a10c6bcefd6b81d5de8001c38d7276619ca17e2cec17cfe9dced8f29b7

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityBAYMARK HEALTH SERVICES, INC.

Victim entityBAYMARK HEALTH SERVICES, INC.

Incidentdiscovered Oct 11, 2024

Stated responseTook steps to secure its systems

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov