CornerStone Staffing Solutions, Inc. — November 2025 breach
Clustered 6 filings across 6 jurisdictions · filing window Nov 13, 2025 → Sep 15, 2026. View entity profile → Other incidents for this victim →
incident inc_f2a2796fa17845eb · merged by deterministic · confidence 100%
Litigation Timing
Discovered → first regulatory filing
Range of discovered_at dates across filings
Days between the first leak-site claim and the first regulatory filing. Positive = the claim came first (public exposure before disclosure). Negative = the claim trailed the filing, so there was no pre-disclosure leak. Counts regulatory filings only — press coverage is not a regulatory disclosure.
Time between earliest and latest filing
Not recorded for this incident
Materiality delta · SEC filing delay — no SEC 8-K in this cluster.
Sensitive data
identity_governmentIncident timeline
Dashed segments are unestablished, not zero — they fill in as filings merge into this incident.
Member cascade — every filing about this breach
- NOV 13Leak siteqilin postfirst filing · attacker claim · unverifiedoperator-confirmedday 0
- SEP 1MA AGMA AG noticeno count statedauto-linked+292d
- SEP 11WA AGWA AG notice681 WA residentsauto-linked+302d
- SEP 11CA AGCA AG noticeno count statedauto-linked+302d
- SEP 12VT AGVT AG notice7 VT residentsauto-linked+303d
- SEP 15TX AGTX AG noticemost recent · 4,425 affectedoperator-confirmed+306d
- 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 + WA AG + CA AGAug 7, 2026TX AGfilings disagree on discovery
- Data types
- Financial account · Health (basic) · Identity (basic) · Government ID · PCI · PHI MA AG + CA AG + TX AG +1
Each fact cites the member filing that establishes it; when filings conflict, every value shows with its source.
Affected residents by state
per-state reported counts
State AGs report only their own residents; teal bars show each state's reported slice.
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
305 days
Cadence
~1 / 61d
vs. multi-state median
38.1× 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.
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