Grass Valley USA, LLC reported a data breach to the Montana Attorney General. The breach was reported on 2020-11-24. The breach occurred from 11/12/2020 to 11/15/2020. 1 Montana residents were affected.
Affected (this filing): 1
Clustered 3 filings across 3 jurisdictions · filing window Nov 24, 2020 → Dec 14, 2020. View entity profile → Other incidents for this victim →
incident inc_3ce0aafbf4344ad1 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
ME MT OR
Time between earliest and latest filing
Not recorded for this incident
Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.
all State AG
per-filing reported counts
State AGs report only their own residents; bars show per-filing counts.
Earliest sighting first · deep chronology in Litigation Timeline
Nov 12, 2020
When the intrusion reportedly occurred, per the linked filings
Nov 15, 2020
Reported by OREGON AG, MAINE AG filings
Grass Valley USA, LLC reported a data breach to the Montana Attorney General. The breach was reported on 2020-11-24. The breach occurred from 11/12/2020 to 11/15/2020. 1 Montana residents were affected.
Affected (this filing): 1
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.
Grass Valley USA, LLC reported a data breach to the Oregon Attorney General. The breach was reported on 2020-12-14. The breach was discovered on 11/15/2020. 558 individuals were affected. Notice was sent on 12/14/2020.
Affected (this filing): 558
Grass Valley USA, LLC reported a data breach to the Maine Attorney General, indicating that an external system breach (hacking) was discovered on November 15, 2020. The breach affected 2 Maine residents, compromising their names and Social Security numbers. The company provided electronic notification to the affected individuals on December 14, 2020, and offered a 24-month membership to Experian IdentityWorks Credit 3B for identity theft protection.
Affected (this filing): 2