Clustered 3 filings across 3 jurisdictions · filing window Jul 1, 2024 → Jul 8, 2024. View entity profile → Other incidents for this victim →
incident inc_502f33ba8d5a43d3 · 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 NH VT
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Dec 19, 2023
When the intrusion reportedly occurred, per the linked filings
Dec 19, 2023
Reported by VERMONT AG filing
Cornerstone Healthcare Group Management Services LLC reported a data breach to the Montana Attorney General. The breach was reported on 2024-07-01. The breach occurred on 12/19/2023. 7 Montana residents were affected.
Affected (this filing): 7
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.
Cornerstone Healthcare Group Management Services LLC experienced a data breach on December 19, 2023, involving unauthorized access to personal information of patients at supported healthcare facilities. Data potentially included names and government identifiers. The company engaged law enforcement and cybersecurity firms, and is offering credit monitoring services.
State AG filing for Cornerstone Healthcare Group Management Services LLC in New Hampshire. The source attachment contains only structural placeholders with no narrative text, dates, or incident details.