TaxSlayer reported a data breach to the Montana Attorney General. The breach was reported on 2016-01-29. The breach occurred from 10/10/2015 to 12/21/2015. 27 Montana residents were affected.
Affected (this filing): 27
Clustered 2 filings across 2 jurisdictions · filed Jan 29, 2016. View entity profile → Other incidents for this victim →
incident inc_e73e5fe029d6469f · 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.
CA MT
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Oct 10, 2015
When the intrusion reportedly occurred, per the linked filings
Jan 13, 2016
Reported by CALIFORNIA AG filing
TaxSlayer reported a data breach to the Montana Attorney General. The breach was reported on 2016-01-29. The breach occurred from 10/10/2015 to 12/21/2015. 27 Montana residents were affected.
Affected (this filing): 27
TaxSlayer disclosed a data breach affecting California residents. An unauthorized third party accessed accounts between October 10, 2015, and December 21, 2015, using credentials stolen from another online service. Affected data included names, addresses, and Social Security numbers. TaxSlayer disabled access, required password resets, and offered 12 months of credit monitoring.
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.