One linked filing — more sources may join as they report · filed May 8, 2026. View entity profile → Other incidents for this victim →
incident inc_da71c21bfda344fb · 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.
Credentials · PII
CA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
May 1, 2026
When the intrusion reportedly occurred, per the linked filings
Chaffey Joint Union High School District notified the California AG of a cybersecurity incident involving its third-party vendor, Instructure (Canvas). The breach potentially exposed parent/guardian credentials and personally identifiable information. The District disabled data sharing with Canvas and initiated active monitoring. Parents were advised to reset their Canvas passwords.
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.