Mainline Health Systems Inc — April 2024 breach

Clustered 6 filings across 6 jurisdictions · filing window Jun 23, 2025 → Jun 30, 2025 (dated filings only). View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

6 filings

States

Affected · reported

101,104

First → last dated filing

Jun 23, 2025 → Jun 30, 2025

Merge confidence

100%

incident inc_42b547ea13534444 · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 6 regulatory filings. The filings describe unauthorized access. Intrusion Apr 10, 2024, discovered Apr 10, 2024. 101,104 individuals reported across the linked filings. Data reported: Government ID, Identity (basic), PHI, and 5 more. Notifications rolled out on a 7-day schedule across 5 dated filings beginning Jun 23, 2025. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental

Discovery variance

406days

Range of discovered_at dates across filings

Filing span

7days

Time between earliest and latest filing

Not recorded for this incident

Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.

Regulatory clocksMaine⏱ ME AG >30d · 33dHIPAA✓ HHS notifiedMassachusetts✓ MA credit monitoring dueFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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