One linked filing — more sources may join as they report · filed Aug 31, 2020. View entity profile → Other incidents for this victim →
incident inc_21a086d06ab740e5 · 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.
WA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Aug 6, 2020
Reported by WASHINGTON AG filing
The Open Window School, a education sector entity reported a ransomware incident to the Washington Attorney General. The organization became aware of the incident on 2020-08-06 and filed notice on 2020-08-31. 1,929 Washington residents were affected. 25 days elapsed between awareness and notification. 181 days to identify the breach. 0 days to contain the breach.
Affected (this filing): 1,929
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.