One linked filing — more sources may join as they report · filed Dec 31, 2020. View entity profile → Other incidents for this victim →
incident inc_327e5b1254704655 · 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.
PHI · Health (basic) · Identity (basic)
MA
all HHS OCR
Earliest sighting first · deep chronology in Litigation Timeline
Mattapan Community Health Center reported to HHS on 2020-12-31 a Hacking/IT Incident affecting 4,073 individuals. Breached information located on Email. An employee was victim of an email phishing scheme exposing ePHI including names, addresses, DOB, SSNs, and medical info. MCHC implemented safeguards, retrained staff, provided credit monitoring, and established a call center.
Affected (this filing): 4,073
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.