Quantum Health, Inc. — May 2026 breach

Clustered 9 filings across 9 jurisdictions · filing window Jul 1, 2026 → Aug 18, 2026. View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

9 filings

States

Affected · reported

184,376

First → last filing

Jul 1, 2026 → Aug 18, 2026

Merge confidence

100%

incident inc_86f67d1d6b8e42e7 · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 9 regulatory filings. Intrusion May 29, 2026–Jun 1, 2026, discovered Jun 1, 2026 — the first regulatory filing landed 30 days later (flagged late). 184,376 individuals reported across the linked filings. Data reported: Government ID, Health (basic), Identity (basic), and 2 more. Notifications rolled out on a 48-day schedule across 9 filings beginning Jul 1, 2026. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental

Notification delay

30days

Discovered → first regulatory filing

Discovery variance

56days

Range of discovered_at dates across filings

Filing span

48days

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 clocksOregon✗ OR AG >45dCalifornia✗ CA 30-day late · 56dMassachusetts⏱ MA AG >30dWashington⏱ WA AG >30dHIPAA✓ HHS notifiedSouth Carolina✓ SC CRA notice dueTexas✓ TX AG ≤30dFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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