One linked filing — more sources may join as they report · filed Nov 20, 2013. View entity profile → Other incidents for this victim →
incident inc_403dde91fdfb4cb7 · 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
Oct 23, 2013 → Oct 24, 2013
When the intrusion reportedly occurred, per the linked filings
Oct 24, 2013
Reported by CALIFORNIA AG filing
Anthem Blue Cross erroneously displayed provider Tax Identification Numbers (SSNs) and business addresses on a PDF posted to its website from Oct 23-24, 2013. The error was discovered and the files were removed and corrected. Anthem offered one year of free identity protection services to affected providers.
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.