Clustered 2 filings across 2 jurisdictions · filed May 23, 2025. View entity profile → Other incidents for this victim →
incident inc_632964f19c774665 · 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.
IL IN
HHS OCR · State AG
Earliest sighting first · deep chronology in Litigation Timeline
Jul 5, 2024
When the intrusion reportedly occurred, per the linked filings
UChicago Medicine Medical Group reported a data breach to the Indiana Attorney General. The breach occurred on 2024-07-05 and was reported on 2025-05-23. 1,694 Indiana residents were affected. 38,656 individuals affected in total.
Affected (this filing): 38,656
UChicago Medicine Medical Group reported to HHS on 2025-05-23 a Hacking/IT Incident affecting 38,656 individuals. Breached information located on Network Server. The incident involved PHI including names, SSNs, addresses, DOBs, claims, diagnoses, and treatment info. The entity provided credit monitoring and implemented additional safeguards.
Affected (this filing): 38,656
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.