Clustered 4 filings across 4 jurisdictions · filing window Oct 6, 2025 → Oct 10, 2025. View entity profile → Other incidents for this victim →
incident inc_5935cec4dfab4076 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
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.
Government ID · PHI · PII
MT NH NM TX
HHS OCR · State AG
per-filing reported counts
State AGs report only their own residents; bars show per-filing counts.
Earliest sighting first · deep chronology in Litigation Timeline
Jan 14, 2025
When the intrusion reportedly occurred, per the linked filings
Jan 29, 2025
Reported by NEW HAMPSHIRE AG filing
Aug 13, 2025
Reported by TEXAS AG filing
Sierra Vista Hospital & Clinics reported to HHS on 2025-10-06 a Hacking/IT Incident affecting 75054 individuals. Breached information located on Network Server.
Affected (this filing): 75,054
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.
Sierra Vista Hospital & Clinics based in Truth or Consequences, New Mexico, a healthcare – medical provider entity reported a data breach to the Texas Attorney General. The breach was discovered on 2025-08-13 and reported on 2025-10-07. 481 Texas residents were affected. 75,054 individuals affected in total. Types of information involved: Name of individual;Address;Social Security Number Information;Medical Information;Health Insurance Information;Date of Birth. Consumers were notified via U.S. Mail.
Affected (this filing): 481
Sierra Vista Hospital & Clinics reported a data breach to the Montana Attorney General. The breach was reported on 2025-10-08. The breach occurred from 01/14/2025 to 01/31/2025. 14 Montana residents were affected.
Affected (this filing): 14
Sierra Vista Hospital & Clinics notified the NH AG of unauthorized network access occurring Jan 14-31, 2025, detected Jan 29, 2025. PHI and SSNs of 4 NH residents were potentially exposed. Notification sent Oct 6, 2025, including credit monitoring.
Affected (this filing): 4