Clustered 2 filings across 2 jurisdictions · filing window Apr 16, 2019 → Apr 17, 2019. View entity profile → Other incidents for this victim →
incident inc_fb1b206e945f41b4 · merge_method deterministic · confidence 100%
Time between earliest and latest filing
Not recorded for this incident
Discovery variance · Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster; needs two dated filings.
IL MT
HHS OCR · State AG
Earliest sighting first · deep chronology in Litigation Timeline
Dec 21, 2018
When the intrusion reportedly occurred, per the linked filings
Delta Dental of Illinois reported a data breach to the Montana Attorney General. The breach was reported on 2019-04-16. The breach occurred from 12/21/2018 to 12/28/2018. 2 Montana residents were affected.
Affected (this filing): 2
Delta Dental of Illinois (IL) reported to HHS OCR on 2019-04-17 a Hacking/IT Incident affecting 4,216 individuals. Breached information was located in Email. The entity submitted two breach reports — one as a Covered Entity (#19-340335) and one as a Business Associate (#19-340146) — for the same underlying incident; HHS consolidated #19-340335 into #19-340146. Business associate involvement confirmed.
Affected (this filing): 4,216
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. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.