Clustered 4 filings across 4 jurisdictions · filing window Aug 4, 2023 → Aug 21, 2023. View entity profile → Other incidents for this victim →
incident inc_6cc93a9c0a544cf1 · 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
Earliest sighting first · deep chronology in Litigation Timeline
May 29, 2023
When the intrusion reportedly occurred, per the linked filings
Jun 13, 2023
Reported by WASHINGTON AG, OREGON 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.
MidFirst Bank, a finance sector entity reported a other incident to the Washington Attorney General. The organization became aware of the incident on 2023-06-13 and filed notice on 2023-08-04. 6,097 Washington residents were affected. 52 days elapsed between awareness and notification. 17 days to identify the breach. 0 days to contain the breach.
Affected (this filing): 6,097
MidFirst Bank reported a data breach to the Montana Attorney General. The breach was reported on 2023-08-21. The breach occurred from 5/29/2023 to 5/30/2023. 659 Montana residents were affected.
Affected (this filing): 659
MidFirst Bank reported a data breach to the Oregon Attorney General. The breach was reported on 2023-08-21. The breach occurred during 5/27/2023 - 5/31/2023. The breach was discovered on 6/13/2023. Notice was sent on 8/21/2023.
California AG SB24 submission for MidFirst Bank regarding a data breach. The notification letter is a sample template offering 24-month OnAlert identity monitoring and credit bureau guidance. Specific breach details, dates, and affected individual counts are not present in the provided source text.