nasco.com
Clustered 2 filings across 2 jurisdictions · filing window Dec 20, 2022 → Oct 10, 2023. View entity profile → Other incidents for this victim →
incident inc_ea89d46e438240b0 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Gap between first leak claim and first regulatory filing
Time between earliest and latest filing
Not recorded for this incident
Discovery variance · Materiality delta · SEC filing delay — no SEC 8-K in this cluster; needs two dated filings.
Identity (basic) · Government ID · Health (basic)
FEDERAL
Leak Site · HHS OCR
Earliest sighting first · deep chronology in Litigation Timeline
nasco.com
Aug 21, 2023
Reported by HHS OCR filing
NASCO, a business associate, reported to HHS on October 10, 2023, a hacking incident that affected 1,744,655 individuals. The breach occurred on a network server and was caused by an exposed software application. The compromised protected health information (PHI) included names, dates of birth, addresses, Social Security numbers, diagnoses, and claims information. In response, NASCO provided complimentary credit monitoring and implemented enhanced security safeguards.
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.
Affected (this filing): 1,744,655