VIRGINIAMalwareHealthcareHealthcareRansomwareData EncryptedCustomer Data InvolvedPHIHealth (basic)Identity (basic)Government IDHighContained

Horizon Services

bd_87431939e0eabf12 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Apr 21, 2025

To disclose

—

Affected

49,303

Confidence

68%

Full breach record for Horizon Services →

Horizon Behavioral Health reported to HHS on 2025-04-21 a Hacking/IT Incident affecting 49,303 individuals. Breached information located on Network Server. The incident involved ransomware encrypting PHI including names, DOBs, SSNs, driver's license numbers, diagnoses, medications, and claims information.

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HIPAA clock✓ HHS notified

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

⚠ No discovery dateThe OCR public portal omits the discovery date, so the 60-day notification clock cannot be evaluated from this source — only that the filing was submitted.

Incident timeline — partial

? — ?

Breach window unknown

Apr 21, 2025

Filed

—

No filing yet · watching

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

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed49,303 affectedView incident

Name: Horizon Services
norm: horizon services
Domain: horizonservices.com
Industry: Health Care Services

Name: Horizon Services
norm: horizon services
Domain: horizonservices.com
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 49,303nationwide
Data types: PHIHealth (basic)Identity (basic)Government ID
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Healthcare provider
Attack vector: Unauthorized Access
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Notified HHS

During the incident: Offered free credit monitoring to affected individuals
Implemented additional administrative, technical, and security safeguards
Notified HHS
Notified affected individuals
Notified the media
Posted substitute notice to its website
Changes made: Implemented additional administrative, technical, and security safeguards
Source: Quoted from the filing itself, not independently verified.

Compliance flags: HHS notified
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.
Clock breakdown: Statute Window Elapsed Threshold Status
HIPAA
Discovered: not extracted
→ Notified: not extracted
— regulatory submission HHS notified

Statute	Window	Elapsed	Threshold	Status
HIPAA	Discovered: not extracted → Notified: not extracted	—	regulatory submission	HHS notified

Status: No extraction artifact recorded for this disclosure.

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://ocrportal.hhs.gov/ocr/breach/breach_report.jsf
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: Apr 21, 2025
Raw hash: ae1158161cc009f1d766b3fcf05eb01ac1eecd456a185cb4a771b584f9d780e3

AI-assisted summary above. The structured extract on this page was generated from the document below. Inspect the source to verify or correct any field.

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Reporting entityHorizon Services

Victim entityHorizon Services

IncidentUnauthorized Access

Stated responseOffered free credit monitoring to affected individuals

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing