🦬Montana State AG
Clustered 4 filings across 4 jurisdictions · filing window Mar 3, 2017 → Mar 6, 2017. View entity profile → Other incidents for this victim →
incident inc_713110eafdad4432 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
CA MT OR WA
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
Feb 1, 2016
When the intrusion reportedly occurred, per the linked filings
Feb 6, 2017
Reported by CALIFORNIA AG, OREGON AG, WASHINGTON AG filings
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.
West Music Company reported a data breach to the Montana Attorney General. The breach was reported on 2017-03-03. The breach occurred from 2/1/2016 to 12/31/2016. 267 Montana residents were affected.
Affected (this filing): 267
West Music Company notified California regulators of a data breach involving its third-party payment processor, Aptos. Unauthorized access occurred between February 2016 and December 2016, affecting payment card information (card numbers, expiration dates, names, addresses, emails) for transactions made on westmusic.com and percussionsource.com. The incident was discovered on February 6, 2017, after law enforcement requested a deferral of disclosure. West Music established a call center for affected customers.
West Music Company reported a data breach to the Oregon Attorney General. The breach was reported on 2017-03-03. The breach occurred during 2/1/2016 - 12/31/2016. The breach was discovered on 2/6/2017. 56,335 individuals were affected. Notice was sent on 3/3/2017.
Affected (this filing): 56,335
West Music Company, a business sector entity reported a malware incident to the Washington Attorney General. The organization became aware of the incident on 2017-02-06 and filed notice on 2017-03-06. 1,495 Washington residents were affected. 28 days elapsed between awareness and notification. 346 days to identify the breach. 0 days to contain the breach.
Affected (this filing): 1,495