Clustered 2 filings across 2 jurisdictions · filed Mar 19, 2021. View entity profile → Other incidents for this victim →
incident inc_e0798e516be048c1 · 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 WA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Jan 12, 2021
When the intrusion reportedly occurred, per the linked filings
Jan 18, 2021
Reported by WASHINGTON AG filing
Cancer Treatment Centers of America reported a data breach to the Montana Attorney General. The breach was reported on 2021-03-19. The breach occurred from 1/12/2021 to 1/18/2021. 364 Montana residents were affected.
Affected (this filing): 364
Cancer Treatment Centers of America, a health sector entity reported a phishing incident to the Washington Attorney General. The organization became aware of the incident on 2021-01-18 and filed notice on 2021-03-19. 579 Washington residents were affected. 60 days elapsed between awareness and notification. 6 days to identify the breach. 0 days to contain the breach.
Affected (this filing): 579
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.