One linked filing — more sources may join as they report · filed Mar 1, 2013. View entity profile → Other incidents for this victim →
incident inc_b76c2a55d7b447b8 · merge_method deterministic
Discovered → first regulatory filing
Not recorded for this incident
Discovery variance · Leak precedence · Materiality delta · SEC filing delay · Filing span — no leak-site claim in this cluster; no SEC 8-K in this cluster; needs two dated filings.
PHI · Health (basic) · Government ID
IL
all HHS OCR
Earliest sighting first · deep chronology in Litigation Timeline
Sep 13, 2012
When the intrusion reportedly occurred, per the linked filings
Sep 13, 2012
Reported by HHS OCR filing
Plexus Group reported to HHS on 2013-03-01 a Unauthorized Access/Disclosure affecting 500 individuals. Breached information located on Other. Prime Therapeutics, a business associate, erroneously submitted a file containing ePHI (names, SSNs, DOBs, addresses) of 500 plan members to IDHFS due to a system error. The file was destroyed by IDHFS and the error was corrected.
Affected (this filing): 500
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.