One linked filing — more sources may join as they report · filed Jan 30, 2025. View entity profile → Other incidents for this victim →
incident inc_398dd9e4f3584448 · 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
Dec 28, 2024
When the intrusion reportedly occurred, per the linked filings
Portola Valley School District reported a data breach to the California Attorney General. The incident occurred on December 28, 2024. The filing provides only the date of the breach and a link to the notification letter; specific details regarding the nature of the breach, data types affected, and number of individuals impacted are not present in the provided HTML metadata or the empty attachment text.
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.