Clustered 4 filings across 3 jurisdictions · filing window Nov 1, 2024 → Nov 6, 2024. View entity profile → Other incidents for this victim →
incident inc_5608cfc29a634dce · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
PII · Identity (basic)
Time between earliest and latest filing
Not recorded for this incident
Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.
CA NH VT
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Dec 15, 2023
Reported by NEW HAMPSHIRE AG filing
Dec 19, 2023
When the intrusion reportedly occurred, per the linked filings
Dec 19, 2023
Reported by VERMONT AG, CALIFORNIA AG filings
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 disclosed a data breach occurring on December 19, 2023, involving unauthorized access to personal information of patients at supported healthcare facilities. The company engaged cybersecurity firms and law enforcement, and is offering credit monitoring services.
Cornerstone Healthcare Group Management Services LLC experienced a data breach on December 19, 2023, involving unauthorized access to personal information of patients at certain supported healthcare facilities. The company detected suspicious network activity in mid-December 2023 and confirmed the breach. Personal information was determined to be impacted on May 30, 2024. The company contained the issue, contacted law enforcement, engaged cybersecurity firms, and is offering identity monitoring services.
Cornerstone Healthcare Group Management Services LLC reported a supplemental data breach affecting 24 New Hampshire residents. The breach occurred on December 19, 2023, following suspicious network activity detected in mid-December 2023. Personal information was compromised. The company engaged cybersecurity firms and law enforcement, and offered credit monitoring services.
Affected (this filing): 24
State AG filing for Cornerstone Healthcare Group Management Services LLC in New Hampshire. The source attachment is empty; no breach details, dates, or data types are extractable from the provided document.