DisclosureLens
Leak SiteState AGConfirmed4 filings · 3 statesLifecycle stage 2 of 3: ConfirmedUnverified claimConfirmedEnforcedqilinhigh sensitivity
Merged incident · 4 filings

Medinah School District 11 — December 2025 breach

Clustered 4 filings across 4 jurisdictions · filing window Feb 1, 2026 Feb 25, 2026. View entity profile → Other incidents for this victim →

1 cross-filing discrepancyMerge100%

Determination

Confirmed

Members

4 filings

States

3

Affected · reported

2,971

First → last filing

Feb 1, 2026 Feb 25, 2026

Merge confidence

100%

incident inc_5d7c26cddbe1400a · merged by human · confidence 100%

Confirmed breach. Merged as one breach: 3 regulatory filings and 1 unverified claim. Intrusion Dec 21, 2025, discovered Jan 6, 2026 — the first regulatory filing landed 26 days later. 2,971 individuals reported across the linked filings. Data reported: Government ID, Health (basic), and Identity (basic). Notifications rolled out on a 24-day schedule across 3 filings beginning Feb 1, 2026. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay
26days

Discovered → first regulatory filing

Leak precedence
Noneclaim trailed by 2d

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.

Filing span
24days

Time between earliest and latest filing

Not recorded for this incident

Discovery variance · Materiality delta · SEC filing delayno SEC 8-K in this cluster; needs two dated filings.

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Medinah School District 11 data breach (2026) · DisclosureLens