Clustered 3 filings across 3 jurisdictions · filed Nov 16, 2021. View entity profile → Other incidents for this victim →
incident inc_37477d99ad354f1e · merge_method deterministic · 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
Oct 29, 2021
When the intrusion reportedly occurred, per the linked filings
Oct 29, 2021
Reported by CALIFORNIA AG, MAINE AG filings
Quest Diagnostics reported a data breach to the Montana Attorney General. The breach was reported on 2021-11-16. The breach occurred on 10/29/2021. 6 Montana residents were affected.
Affected (this filing): 6
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.
On October 29, 2021, Quest Diagnostics experienced an inadvertent email misdelivery where an employee sent a spreadsheet containing personal information of current and former employees to internal distribution lists. The data included names, Social Security Numbers, employee ID numbers, and for some, personal email addresses. The company recalled the email, removed it from systems, and offered 12 months of identity monitoring.
Quest Diagnostics reported an inadvertent disclosure of patient information on October 29, 2021, affecting 5,325 individuals, including 6 Maine residents. The breach involved names and Social Security Numbers. Quest Diagnostics notified affected individuals on November 16, 2021, and offered 12 months of credit monitoring through Experian.
Affected (this filing): 5,325