CBIZ Accounting, Tax & Advisory of Utah reported a data breach to the Montana Attorney General. The breach was reported on 2021-03-30. The breach occurred on 12/30/2020. 12 Montana residents were affected.
Affected (this filing): 12
Clustered 2 filings across 2 jurisdictions · filed Mar 30, 2021. View entity profile → Other incidents for this victim →
incident inc_82be07040fa84add · 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.
MT NH
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Dec 30, 2020
When the intrusion reportedly occurred, per the linked filings
Dec 30, 2020
Reported by NEW HAMPSHIRE AG filing
CBIZ Accounting, Tax & Advisory of Utah reported a data breach to the Montana Attorney General. The breach was reported on 2021-03-30. The breach occurred on 12/30/2020. 12 Montana residents were affected.
Affected (this filing): 12
CBIZ Accounting, Tax & Advisory of Utah, LLC reported unauthorized access to a single employee's email account on December 30, 2020. The breach affected two New Hampshire residents, exposing names, Social Security numbers, and financial account numbers. CBIZ engaged a forensic firm, secured the account, and notified the NH Attorney General on March 30, 2021. Affected individuals received one year of credit monitoring via Kroll.
Affected (this filing): 2
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.