CornerStone Staffing Solutions, Inc. — November 2025 breach
Clustered 10 records across 9 jurisdictions: 9 filings and 1 leak-site claim · filing window Sep 11, 2026 → Sep 18, 2026 (dated filings only). View entity profile → Other incidents for this victim →
incident inc_f2a2796fa17845eb · merged by deterministic · confidence 100%
Litigation Timing
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 SEC 8-K in this cluster.
Sensitive data
authenticationidentity_governmentminorIncident timeline
Dashed segments are unestablished, not zero — they fill in as filings merge into this incident. Filings without a recorded filing day, or recorded as filed before the breach they report began, are not placed on this rail.
Member cascade — every filing and leak-site claim in this incident
- NOV 13Leak siteqilin postfirst record · attacker claim · unverifiedoperator-confirmedday 0
- SEP 1MA AGMA AG noticefiling day not on record · 243 MA residentsauto-linked—
- SEP 11IA AGIA AG notice915 IA residentsauto-linked+302d
- SEP 11WA AGWA AG notice681 WA residentsauto-linked+302d
- SEP 11IN AGIN AG noticestates nationwide total 366,122auto-linked+302d
- SEP 11CA AGCA AG noticeno count statedauto-linked+302d
- SEP 11OR AGOR AG noticestates nationwide total 366,122auto-linked+302d
- SEP 12VT AGVT AG notice7 VT residentsauto-linked+303d
- SEP 15TX AGTX AG noticestates nationwide total 366,122operator-confirmed+306d
- SEP 18NH AGNH AG noticemost recent · 45 NH residentsauto-linked+309d
- Watching for additional filings — new sources merge into this incident automatically.
Roll-up facts — reconciled across members
- Breach window
- Nov 6, 2025 – Nov 21, 2025 MA AG
- Discovered
- Nov 17, 2025MA AG + IA AG + WA AG +2Apr 15, 2026OR AGAug 7, 2026TX AGfilings disagree on discovery
- Data types
- Authentication · Financial account · Health (basic) · Identity (basic) · Government ID · Minor · PCI · PHI · PII MA AG + WA AG + VT AG +4
- Attack vector
- Unauthorized Access IA 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)
366,122
Sum of filed state slices
6,486· 1.8% of stated
98% 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
Attacker assertion only. Establishes: claim date, group, alleged victim.
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 Sep 16, 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
7 days
Cadence
~1 / 1d
vs. multi-state median
1.2× 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
The Disclosure Clock is a weekly briefing on what landed in the disclosure record, and the gap between the criminals' post and the regulator's filing — measured on the whole record, with the method shown.
Weekly. Double opt-in, one-click unsubscribe, and the address goes nowhere else.