🦬Montana State AG
Clustered 3 filings across 3 jurisdictions · filed Jan 13, 2021. View entity profile → Other incidents for this victim →
incident inc_031fc8d1a11841d1 · merge_method human · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
CA ME MT
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
Feb 7, 2020
When the intrusion reportedly occurred, per the linked filings
May 20, 2020
Reported by CALIFORNIA AG filing
Nov 10, 2020
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.
Archer School for Girls reported a data breach to the Montana Attorney General. The breach was reported on 2021-01-13. The breach occurred from 2/7/2020 to 5/20/2020. 3 Montana residents were affected.
Affected (this filing): 3
The Archer School for Girls reported a data breach involving its vendor, Blackbaud, Inc. Unauthorized access occurred between February 7, 2020, and May 20, 2020. The attacker exfiltrated backup files containing unencrypted personal information and attempted to encrypt files for ransom. Blackbaud paid the ransom and destroyed the stolen files. Archer notified affected individuals and offered two years of identity monitoring services.
The Archer School for Girls reported a data breach affecting 6,385 individuals. The breach, which occurred between February 7, 2020, and May 20, 2020, involved an external system compromise (hacking). The compromised information included names in combination with financial account or credit/debit card numbers and associated security codes or PINs. The breach was discovered on November 10, 2020, and affected individuals were notified on January 13, 2021.
Affected (this filing): 6,385