UnknownHealthcareHealthcareGovernment IDFinancial accountMedium

Horizon Healthcare RCM

bd_8ff54dbb0d7f4d76 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jun 27, 2025

To disclose

—

Affected

62state residents only

Linked

8 filings

Confidence

95%

Full breach record for Horizon Healthcare RCM →2 incidents on file

Horizon Healthcare RCM reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-06-27. 62 Massachusetts residents were affected.

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Massachusetts clock✓ MA credit monitoring due

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Jun 27, 2025

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

HHS OCRbd_2494d37011c4c79c2025-06-27Verified
Indiana State AGbd_25fcf4be90ea13492025-06-27Verified
South Carolina State AGbd_2c30bdb47fb3604a2025-06-27Verified
Nebraska State AGbd_683236bfcdb2a0902025-06-27Verified

Show 3 more filings ↓up to 4d gap

New Hampshire State AGbd_a3ed180e1ba972d72025-06-27Verified
Maine State AGbd_b9ed9343a285ba772025-06-27Verified
Illinois State AGbd_5a1984ac023e4ba82025-07-01 · +4dVerified

Name: Horizon Healthcare RCM
norm: horizon healthcare rcm

Name: Horizon Healthcare RCM
norm: horizon healthcare rcm
Industry: Healthcareregulator portal

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 62state-resident count only
Data types: Government IDFinancial account
Data elements: Social Security numberFinancial account number
Stated not affected: Medical informationDriver's licence numberPayment card number
The filing states these were not involved. Categories absent from both lists were not addressed either way.
Attack vector: Unknown

Compliance flags: MA credit monitoring due
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 7 states

View merged incident ↗

HHS OCRJun 27 · first

Indiana State AGJun 27 · first

South Carolina State AGJun 27 · first

Nebraska State AGJun 27 · first

New Hampshire State AGJun 27 · first

Maine State AGJun 27 · first

Massachusetts State AGJun 27 · first · this page

Illinois State AG+4d

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://www.mass.gov/doc/data-breach-report-2025/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 27, 2025
Raw hash: 5275eefab4bfa7fccf873e0d961de34ef47abf327e6c0e1b618b34d72c742c14

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityHorizon Healthcare RCM

Victim entityHorizon Healthcare RCM

IncidentUnknown

ComplianceMA credit monitoring due

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov