🦬Montana State AG
Clustered 3 filings across 3 jurisdictions · filing window Mar 11, 2021 → Mar 15, 2021. View entity profile → Other incidents for this victim →
incident inc_e73e38673ba34008 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
Government ID
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.
CA ME MT
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Apr 7, 2020
When the intrusion reportedly occurred, per the linked filings
Jun 16, 2020
Reported by CALIFORNIA AG filing
Jan 4, 2021
Reported by MAINE AG filing
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.
Alameda-Contra Costa Transit District reported a data breach to the Montana Attorney General. The breach was reported on 2021-03-11. The breach occurred from 4/7/2020 to 6/16/2020. 3 Montana residents were affected.
Affected (this filing): 3
Alameda-Contra Costa Transit District (AC Transit) notified the California Office of the Attorney General of a data breach involving unauthorized access to employee email accounts between April 7, 2020, and June 16, 2020. The incident involved the theft of employee names and potentially other personal information. AC Transit reset compromised credentials, engaged forensic investigators, and offered one year of complimentary credit monitoring via Experian IdentityWorks.
Alameda-Contra Costa Transit District, a government entity, experienced an external system breach (hacking) on April 7, 2020. The breach was discovered on January 4, 2021. The names and Social Security numbers of 3 Maine residents were compromised. Affected individuals were notified on March 11, 2021, and offered one year of identity protection services through Experian.
Affected (this filing): 3