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Confirmed3 filings · 2 statesUnverified claimConfirmedEnforcedmoderate sensitivity

Merged incident · 3 filings

Radiation Oncology Network of Southern California, LLC — December 2024 breach

Clustered 3 filings across 2 jurisdictions · filing window Jun 27, 2025 → Jul 15, 2025. View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Confirmed

Members

3 filings

States

Affected · reported

12,944

First → last filing

Jun 27, 2025 → Jul 15, 2025

Merge confidence

100%

incident inc_77156fd531224f26 · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 3 regulatory filings. Intrusion Dec 13, 2024–Dec 16, 2024, discovered Jun 13, 2025 — the first regulatory filing landed 14 days later. 12,944 individuals reported across the linked filings. Data reported: PHI, Health (basic), and Identity (basic). Notifications rolled out on a 18-day schedule across 3 filings beginning Jun 27, 2025. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental

Notification delay

14days

Discovered → first regulatory filing

Discovery variance

0days

Range of discovered_at dates across filings

Filing span

18days

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 clocksHIPAA✓ HHS notifiedFull clock table in Litigation Timeline

Incident timeline

Dec 13, 2024breach begins

Jun 13, 2025discovered

notification delay · 14 days

Jun 27, 2025first filing

Jul 15, 2025most recent filing

Dashed segments are unestablished, not zero — they fill in as filings merge into this incident.

Member cascade — every filing about this breach

JUN 27HHS OCRHHS OCR noticefirst filing · states nationwide total 12,944day 0
JUL 1IL AGIL AG noticeno count statedauto-linked+4d
JUL 15CA AGCA AG noticemost recent · no count statedauto-linked+18d
Watching for additional filings — new sources merge into this incident automatically.

Roll-up facts — reconciled across members

Breach window: Dec 13, 2024 – Dec 16, 2024
Discovered: Jun 13, 2025· 182d undetected
Data types: PHI · Health (basic) · Identity (basic)
Attack vector: Unauthorized Access

Each fact cites the member filing that establishes it; when filings conflict, every value shows with its source.

Evidence ladder — rungs this incident occupies

Leak-site claim

No leak-site claim on record for this incident.

Press / market report

No press coverage linked yet.

State AG / regulator filing3 members

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

No SEC filing or victim statement yet.

Merge provenance

Method: deterministic
Confidence: 1.00 · above the 0.85 auto-merge floor
Audit: Every link edge records its method, confidence and model + prompt versions (100% is the strongest edge).

Merges are reversible — a wrong link can be detached with its audit trail intact. How merging works.

Filing velocity

Spread

18 days

Cadence

~1 / 9d

vs. multi-state median

2.3× slower

About this clustering

DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. This page states only what the linked filings agree on; each filing's own account stays on its own record, linked from the timeline below.

The weekly clock on records like this one

The Disclosure Clock is a weekly briefing on what landed in the disclosure record, and the gap between the criminals' post and the regulator's filing — measured on the whole record, with the method shown.

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