🦬Montana State AG
Clustered 3 filings across 3 jurisdictions · filing window Nov 26, 2018 → Nov 30, 2018. View entity profile → Other incidents for this victim →
incident inc_5c83044175ba4fdb · merge_method human · 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.
CA MT OR
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
May 2, 2018
When the intrusion reportedly occurred, per the linked filings
Sep 26, 2018
Reported by OREGON AG filing
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.
Cancer Treatment Centers of America (CTCA) reported a data breach to the Montana Attorney General. The breach was reported on 2018-11-26. The breach occurred from 5/2/2018 to 5/5/2018. 190 Montana residents were affected.
Affected (this filing): 190
Cancer Treatment Centers of America at Western Regional Medical Center reported a data breach to the California Attorney General. The filing indicates the breach occurred on May 2, 2018. No further details regarding the nature of the breach, data types affected, or number of individuals impacted are provided in this summary record.
Cancer Treatment Centers of America reported a data breach to the Oregon Attorney General. The breach was reported on 2018-11-30. The breach occurred during 5/2/2018 - 5/2/2018. The breach was discovered on 9/26/2018. Notice was sent on 11/26/2018.