HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHealth (basic)PHIMediumContained

BAYMARK HEALTH SERVICES, INC.

bd_4365a1babe67b2d7 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Oct 11, 2024

Filed

Jan 8, 2025

To disclose

—

Affected

Not disclosed

Linked

16 filings

Confidence

65%

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

BayMark Health Services, Inc. disclosed a cybersecurity incident affecting Nebraska residents. Unauthorized access occurred between September 24 and October 14, 2024, discovered on October 11, 2024. Patient information, including names, SSNs, driver's license numbers, dates of birth, and PHI, was accessed. Notifications were mailed on January 8, 2025, offering one year of credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d

Incident timeline

undetected · 17 days

Sep 24, 2024

Begins

Oct 11, 2024

Discovered

Jan 8, 2025

Filed

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 101 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

HHS OCRbd_1556e1ab2237060e2025-01-08Verified by operator
California State AGbd_e84759092a766ea52025-01-08Verified
Oregon State AGbd_0773210a4cd26ea62025-05-02 · +114dVerified
Indiana State AGbd_1cedfa4d4dcc2eaa2025-05-02 · +114dVerified

Show 6 more filings ↓up to 114d gap

New Hampshire State AGbd_52c70a5301f6009f2025-05-02 · +114dVerified
Maine State AGbd_9433a040cd8602212025-05-02 · +114dVerified
Washington State AGbd_d75ef725e07d4c8d2025-05-02 · +114dVerified
California State AGbd_d9bc679cc6a12d272025-05-02 · +114dVerified
Nebraska State AGbd_e672487f946f1c322025-05-02 · +114dVerified
Vermont State AGbd_fea57e1ef45f00b72025-05-02 · +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: —
Notification sent: Jan 8, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDHealth (basic)PHI
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: notified law enforcement
Initial access: exploit_public_facing

During the incident: Took steps to secure its systems
Launched an investigation with the assistance of third-party forensic experts
Notified law enforcement
Initiated a review and analysis of those files
Notified the facilities that the incident resulted in unauthorized access to its patients’ information
Agreed to provide notifications to individuals and regulators on their behalf
Mailed a notification letter via U.S. First-Class mail
Offering one year of complimentary credit monitoring, fraud consultation, and identity theft restoration services through Equifax
Provided a toll-free call center
Changes made: Implemented and evaluate enhanced safeguards and security measures to further protect BayMark’s systems and reduce the likelihood of a similar future event
Implemented additional safeguards and technical security measures to further protect and monitor our systems
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >90d
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

California State AGJan 8 · first

Nebraska State AGJan 8 · first · this page

Oregon State AG+114d

Indiana State AG+114d

New Hampshire State AG+114d

Maine State AG+114d

Washington State AG+114d

California State AG+114d

Nebraska State AG+114d

Vermont State AG+114d

Pattern: first filing Jan 8 (TX), last May 2 (VT) — 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://nebraska.gov/ago/data-breach/documents/BayMark - Nebraska Attachment.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 8, 2025
Raw hash: 86c81c72190e68948648c7873ba523dd9b7c8e417bb547bd1c3202e37e716c48

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 >90d

Extraction provenanceno artifact recorded

Source provenancenebraska.gov