Clustered 2 filings across 2 jurisdictions · filed Jul 27, 2021. View entity profile → Other incidents for this victim →
incident inc_ceb9ecbff4ed4f9e · 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
May 19, 2021
When the intrusion reportedly occurred, per the linked filings
May 19, 2021
Reported by CALIFORNIA AG filing
D&K Engineering reported a data breach to the Montana Attorney General. The breach was reported on 2021-07-27. The breach occurred on 5/19/2021. 1 Montana residents were affected.
Affected (this filing): 1
D&K Engineering Inc. notified employees of a data security incident discovered on May 19, 2021, involving unauthorized access to employment-related personal information, including names, dates of birth, Social Security numbers, and health insurance information. The company took systems offline, engaged forensic experts, and notified the FBI. Identity theft protection services were offered to affected US employees.
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.