One linked filing — more sources may join as they report · filed Mar 16, 2012. View entity profile → Other incidents for this victim →
incident inc_7e5e1e3f958e4e11 · 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.
Government ID · Identity (basic)
CA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Sep 26, 2011
Reported by CALIFORNIA AG filing
Kaiser Foundation Health Plan disclosed a breach of confidential employee information found on a non-Kaiser Permanente external hard drive purchased second-hand. The data included names, Social Security Numbers, dates of birth, and addresses. The breach was brought to attention in late September 2011. The investigation is ongoing. One year of credit monitoring is being provided.
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.