Grande Ronde Hospital reported a data breach to the Montana Attorney General. The breach was reported on 2020-06-03. The breach occurred on 2/19/2020. 4 Montana residents were affected.
Affected (this filing): 4
Clustered 2 filings across 2 jurisdictions · filed Jun 3, 2020. View entity profile → Other incidents for this victim →
incident inc_4ca8a2aa3304485b · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
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.
MT OR
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Feb 19, 2020
When the intrusion reportedly occurred, per the linked filings
Mar 20, 2020
Reported by OREGON AG filing
Grande Ronde Hospital reported a data breach to the Montana Attorney General. The breach was reported on 2020-06-03. The breach occurred on 2/19/2020. 4 Montana residents were affected.
Affected (this filing): 4
Grande Ronde Hospital reported a data breach to the Oregon Attorney General. The breach was reported on 2020-06-03. The breach occurred during 2/18/2020 - 2/19/2020. The breach was discovered on 3/20/2020. 1,345 individuals were affected. Notice was sent on 6/3/2020.
Affected (this filing): 1,345
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.