Southern Illinois University — September 2025 breach

Clustered 3 filings across 3 jurisdictions · filing window Aug 20, 2026 → Aug 21, 2026. View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Confirmed

Members

3 filings

States

Affected · reported

1,620

First → last filing

Aug 20, 2026 → Aug 21, 2026

Merge confidence

100%

incident inc_f5c3af042fdd40fd · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 3 regulatory filings. Intrusion Sep 29, 2025, discovered Jul 24, 2026 — the first regulatory filing landed 27 days later. 1,620 individuals reported across the linked filings. Data reported: Government ID, PII, and Identity (basic). Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental

Notification delay

27days

Discovered → first regulatory filing

Filing span

1days

Time between earliest and latest filing

Not recorded for this incident

Discovery variance · Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster; needs two dated filings.

Regulatory clocksTexas✓ TX AG ≤30dFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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.