One linked filing — more sources may join as they report · filed Sep 7, 2018. View entity profile → Other incidents for this victim →
incident inc_6e6046c84ddb4dd1 · 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.
CA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Aug 8, 2018
When the intrusion reportedly occurred, per the linked filings
Mt. Diablo Unified School District reported a data breach to the California Attorney General. The breach occurred on August 8, 2018. The attached notification letter content is missing from the source, so specific details regarding data types, affected counts, and cause are not available in this extraction.
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.