ARKANSASHackingHealthcareHealthcarePHIHealth (basic)Identity (basic)HighContained

Mainline Health Systems Inc

bd_2f3a0de1cd17c274 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Jun 23, 2025

To disclose

—

Affected

101,104

Linked

6 filings

Confidence

70%

Full breach record for Mainline Health Systems Inc →

Mainline Health Systems Inc reported to HHS on 2025-06-23 a Hacking/IT Incident affecting 101,104 individuals. Breached information located on Network Server.

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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

Jun 23, 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 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_8f8d9fb358c4917b2025-06-23Verified
Maine State AGbd_f84aac6a930bd29b2025-06-23Verified
New Hampshire State AGbd_261065496c6ad4cb2025-06-24 · +1dVerified
Nebraska State AGbd_a8b640e79c6460072025-06-20 · +3dVerified

Show 1 more filing ↓up to 7d gap

Texas State AGbd_4b8f3ae79ac45cb02025-06-30 · +7dVerified

Name: Mainline Health Systems Inc
norm: mainline health
Industry: Health Care Services

Name: Mainline Health Systems Inc
norm: mainline health
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 101,104nationwide
Data types: PHIHealth (basic)Identity (basic)
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Healthcare provider
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified HHS

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.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Nebraska State AGJun 20 · first

Massachusetts State AG+3d

Maine State AG+3d

HHS OCR+3d · this page

New Hampshire State AG+4d

Texas State AG+10d

Pattern: first filing Jun 20 (NE), last Jun 30 (TX) — a 10-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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: Jun 23, 2025
Raw hash: 59580e47ef6cb390c571186217b4689db9376c13a1978ab842ccfe20af2aa64a

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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Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityMainline Health Systems Inc

Victim entityMainline Health Systems Inc

IncidentUnauthorized Access

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing