Mainline Health Systems Inc
bd_4b8f3ae79ac45cb0 · schema v1 · pii pii-v1
Full breach record for Mainline Health Systems Inc →Mainline Health Systems Inc based in Monticello, Arkansas, a healthcare – medical provider entity reported a data breach to the Texas Attorney General. The breach was discovered on 2025-05-21 and reported on 2025-06-30. 428 Texas residents were affected. 101,104 individuals affected in total. Types of information involved: Name of individual;Address;Social Security Number Information;Driver’s License number;Government-issued ID number (e.g. passport, state ID card);Financial Information (e.g. account number, credit or debit card number);Medical Information;Health Insurance Information;Date of Birth. Consumers were notified via U.S. Mail.
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Incident timeline
Apr 10, 2024
Begins
May 21, 2025
Discovered
Jun 30, 2025
Filed
vs. sector median
7 wks faster
Linked disclosures
Why this link?Regulatory filings (5) · sorted by filing gap
- New Hampshire State AGbd_261065496c6ad4cb2025-06-24 · +6dVerified
- HHS OCRbd_2f3a0de1cd17c2742025-06-23 · +7dVerified
- Massachusetts State AGbd_8f8d9fb358c4917b2025-06-23 · +7dVerified
- Maine State AGbd_f84aac6a930bd29b2025-06-23 · +7dVerified
Show 1 more filing ↓Show fewer ↑up to 10d gap
- Nebraska State AGbd_a8b640e79c6460072025-06-20 · +10dVerified
Filing propagation · 6 filings · 6 states
View merged incident ↗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
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.