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Confirmed3 filings · 2 statesUnverified claimConfirmedEnforcedinc_ransomhigh sensitivity

Merged incident · 3 filings

Seneca Nation Health System — April 2024 breach

Clustered 3 filings across 3 jurisdictions · filing window May 5, 2024 → Sep 6, 2024. View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Confirmed

Members

3 filings

States

Affected · reported

16,879

First → last filing

May 5, 2024 → Sep 6, 2024

Merge confidence

100%

incident inc_fcc5d69703e54359 · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 2 regulatory filings and 1 unverified claim. The filings describe unauthorized access. Intrusion Apr 23, 2024–Apr 30, 2024, discovered Apr 30, 2024 — the first regulatory filing landed 129 days later. 16,879 individuals reported across the linked filings. Data reported: Government ID, PHI, Health (basic), and 3 more. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay

129days

Discovered → first regulatory filing

Leak precedence

124days before filing

Days between the first leak-site claim and the first regulatory filing. Positive = the claim came first (public exposure before disclosure). Negative = the claim trailed the filing, so there was no pre-disclosure leak. Counts regulatory filings only — press coverage is not a regulatory disclosure.

Filing span

124days

Time between earliest and latest filing

Not recorded for this incident

Discovery variance · Materiality delta · SEC filing delay — no SEC 8-K in this cluster; needs two dated filings.

Regulatory clocksLeak gap⏱ Leak >90dFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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