Manhasset Union Free School District — September 2021 breach
Clustered 3 filings across 3 jurisdictions · filing window Jan 6, 2022 → Apr 20, 2022. View entity profile → Other incidents for this victim →
incident inc_3aaab4668b3d46e0 · merged by human · 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
- JAN 6Leak sitevicesociety postfirst filing · attacker claim · unverifiedoperator-confirmedday 0
- APR 20ME AGME AG noticestates nationwide total 5,709+104d
- APR 20NH AGNH AG noticemost recent · 1 NH residentsoperator-confirmed+104d
- Watching for additional filings — new sources merge into this incident automatically.
Roll-up facts — reconciled across members
- Breach window
- Sep 10, 2021 – Sep 14, 2021 ME AG
- Discovered
- Sep 14, 2021NH AGFeb 17, 2022ME AGfilings disagree on discovery
- Data types
- Government ID · Identity (basic) ME AG + NH AG
- Attack vector
- Unauthorized Access ME 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)
5,709
Sum of filed state slices
4· 0.1% of stated
100% of the stated total lives in states whose filings carry no count — the dashed share shrinks as filings land.
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
- human
- Confidence
- 1.00 · above the 0.85 auto-merge floor
- Reviewed
- operator-reviewed Aug 9, 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
104 days
Cadence
~1 / 52d
vs. multi-state median
13.0× 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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