The Curators of the University of Missouri — May 2023 breach

Clustered 6 filings across 6 jurisdictions · filing window Oct 20, 2023 → Oct 25, 2023. View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

6 filings

States

Affected · reported

118,808

First → last filing

Oct 20, 2023 → Oct 25, 2023

Merge confidence

100%

incident inc_f54b875f4a534c7d · merged by deterministic · confidence 100%

Part of the Progress Software Corporation supply-chain incident (2023) — at least 89 organizations filed notifications naming this third party.

Confirmed breach. Merged as one breach: 6 regulatory filings. The filings describe hacking. Intrusion May 31, 2023, discovered May 31, 2023 — the first regulatory filing landed 142 days later. 118,808 individuals reported across the linked filings. Data reported: Government ID, Identity (basic), and PII. Notifications rolled out on a 5-day schedule across 6 filings beginning Oct 20, 2023. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay

142days

Discovered → first regulatory filing

Discovery variance

101days

Range of discovered_at dates across filings

Filing span

5days

Time between earliest and latest filing

Not recorded for this incident

Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.

Regulatory clocksVermont⏱ VT AG >14 bdayMaine⏱ ME AG >30d · 45dMassachusetts✓ MA credit monitoring dueFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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