Clustered 3 filings across 3 jurisdictions · filing window Nov 20, 2020 → Nov 30, 2020. View entity profile → Other incidents for this victim →
incident inc_8d7590ecbe9d4530 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
Identity (basic) · Government ID
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.
CA ME MT
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Oct 20, 2020
When the intrusion reportedly occurred, per the linked filings
Oct 22, 2020
Reported by MAINE AG, CALIFORNIA AG filings
Minerals Technologies Inc. reported a data breach to the Maine Attorney General, discovered on October 22, 2020. The incident, which occurred on October 20, 2020, impacted 109 residents of Maine. The compromised data included names and Social Security numbers. The company offered two years of complimentary credit monitoring and identity theft protection services to affected individuals.
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.
Affected (this filing): 109
Minerals Technologies, Inc. reported a data breach to the Montana Attorney General. The breach was reported on 2020-11-24. The breach occurred on 10/20/2020. 440 Montana residents were affected.
Affected (this filing): 440
Minerals Technologies Inc. (MTI) reported a data security breach occurring on October 20, 2020, involving unauthorized access to MTI servers. The incident compromised PII of employees and dependents, including names, SSNs, dates of birth, and banking information. MTI retained an IT firm for forensic investigation, contained the breach, and provided two years of complimentary credit monitoring via TransUnion and Equifax Child Identity Monitoring. No evidence of misuse was found at the time of notification.