MINERALS TECHNOLOGIES INC. — October 2020 breach
Clustered 6 filings across 6 jurisdictions · filing window Nov 20, 2020 → Dec 8, 2020. View entity profile → Other incidents for this victim →
incident inc_8d7590ecbe9d4530 · merged by deterministic · confidence 100%
Litigation Timing
SupplementalDiscovered → first regulatory filing
Range of discovered_at dates across filings
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.
Sensitive data
identity_governmentminorIncident timeline
Dashed segments are unestablished, not zero — they fill in as filings merge into this incident.
Member cascade — every filing about this breach
- NOV 20ME AGME AG noticefirst filing · states nationwide total 7,915day 0
- NOV 24MT AGMT AG notice440 MT residentsoperator-confirmed+4d
- NOV 24IN AGIN AG noticestates nationwide total 12,233auto-linked+4d
- NOV 30MA AGMA AG notice760 MA residentsauto-linked+10d
- NOV 30CA AGCA AG noticeno count statedauto-linked+10d
- DEC 8NH AGNH AG noticemost recent · 14 NH residentsauto-linked+18d
- Watching for additional filings — new sources merge into this incident automatically.
Roll-up facts — reconciled across members
- Breach window
- Oct 20, 2020 ME AG
- Discovered
- Oct 22, 2020· 2d undetected ME AG + MT AG + CA AG +1
- Data types
- Employment · Financial account · Health (basic) · Identity (basic) · Government ID · Minor · PII ME AG + MT AG + CA AG +2
- Attack vector
- Unauthorized Access MT AG
Each fact cites the member filing that establishes it; when filings conflict, every value shows with its source.
Count reconciliation
per-state reported counts
Nationwide (stated in a filing)
12,233
Sum of filed state slices
1,965· 16.1% of stated
84% of the stated total lives in states whose filings carry no count — the dashed share shrinks as filings land.
State AGs report only their own residents; teal bars show each state's reported slice. The gray US row is the nationwide total reported in a linked filing.
Evidence ladder — rungs this incident occupies
No leak-site claim on record for this incident.
No press coverage linked yet.
Unlocks: discovery date, data types, affected count, compliance clock.
No SEC filing or victim statement yet.
Merge provenance
- Method
- deterministic
- Confidence
- 1.00 · above the 0.85 auto-merge floor
- Reviewed
- operator-reviewed Jun 12, 2026 · at least one link edge was human-adjudicated
- Audit
- Every link edge records its method, confidence and model + prompt versions (100% is the strongest edge).
Merges are reversible — a wrong link can be detached with its audit trail intact. How merging works.
Filing velocity
Spread
18 days
Cadence
~1 / 3.6d
vs. multi-state median
2.3× slower
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. This page states only what the linked filings agree on; each filing's own account stays on its own record, linked from the timeline below.
The weekly clock on records like this one
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