One linked filing — more sources may join as they report · filed Dec 12, 2012. View entity profile → Other incidents for this victim →
incident inc_38d6216865f54999 · 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) · Employment
CA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Dec 1, 2012 → Dec 1, 2012
When the intrusion reportedly occurred, per the linked filings
Dec 1, 2012
Reported by CALIFORNIA AG filing
Mt. Diablo Unified School District reported the theft of a password-protected, unencrypted computer from a burglarized office on December 1, 2012. The device contained Excel and Word files with names, dates of birth, addresses, and Social Security numbers of employees and former employees working between 1998 and 2010. The District offered one year of credit monitoring and implemented measures to reduce SSN usage.
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.