Stamford Hospital reported a data breach to the Montana Attorney General. The breach was reported on 2020-10-15. The breach occurred from 2/7/2020 to 5/20/2020. 1 Montana residents were affected.
Affected (this filing): 1
Clustered 2 filings across 2 jurisdictions · filed Oct 15, 2020. View entity profile → Other incidents for this victim →
incident inc_3443fb1a235d4b62 · 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.
Health (basic) · Identity (basic)
CT MT
HHS OCR · State AG
Earliest sighting first · deep chronology in Litigation Timeline
Feb 7, 2020
When the intrusion reportedly occurred, per the linked filings
Stamford Hospital reported a data breach to the Montana Attorney General. The breach was reported on 2020-10-15. The breach occurred from 2/7/2020 to 5/20/2020. 1 Montana residents were affected.
Affected (this filing): 1
Stamford Hospital (CT) reported to HHS on 2020-10-15 a Hacking/IT Incident affecting 1,050 individuals. Its business associate experienced a ransomware attack impacting ePHI stored on a Network Server. Exposed data included names, addresses, dates of birth, diagnoses, and other treatment information. The hospital notified HHS, affected individuals, and the media.
Affected (this filing): 1,050
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.