One linked filing — more sources may join as they report · filed Mar 23, 2015. View entity profile → Other incidents for this victim →
incident inc_2810d27903664a10 · merge_method deterministic
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.
Health (basic) · Identity (basic) · Government ID
FEDERAL
all HHS OCR
Earliest sighting first · deep chronology in Litigation Timeline
AT&T Group Health Plan reported a breach to HHS affecting 50,000 individuals due to a series of cyberattacks on its business associate's parent corporation, Anthem, Inc. The exposed information included names, Social Security numbers, medical identification numbers, addresses, dates of birth, email addresses, and employment information. The incident was located on a network server.
Affected (this filing): 50,000
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.