REI Co-op reported a data breach to the Montana Attorney General. The breach was reported on 2020-09-16. The breach occurred from 5/1/2020 to 5/13/2020. 11 Montana residents were affected.
Affected (this filing): 11
Clustered 2 filings across 2 jurisdictions · filed Sep 16, 2020. View entity profile → Other incidents for this victim →
incident inc_9079222fda2f4cd5 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Time between earliest and latest filing
Not recorded for this incident
Discovery variance · Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster; needs two dated filings.
ME MT
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
May 1, 2020
When the intrusion reportedly occurred, per the linked filings
May 13, 2020
Reported by MAINE AG filing
REI Co-op reported a data breach to the Montana Attorney General. The breach was reported on 2020-09-16. The breach occurred from 5/1/2020 to 5/13/2020. 11 Montana residents were affected.
Affected (this filing): 11
REI Co-Op reported an external system breach that occurred on May 12, 2020, and was discovered the following day. The breach compromised the names and Social Security numbers of 363 individuals. Affected parties were notified in writing on September 16, 2020, and were offered credit and identity monitoring services through Kroll.
Affected (this filing): 363
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.