UNUM GROUP — May 2023 breach

Clustered 7 filings across 7 jurisdictions · filing window Aug 3, 2023 → Sep 19, 2023. View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

7 filings

States

Affected · reported

650,521

First → last filing

Aug 3, 2023 → Sep 19, 2023

Merge confidence

100%

incident inc_99a074866696479c · merged by deterministic · confidence 100%

Part of the Progress Software Corporation supply-chain incident (2023) — at least 97 organizations filed notifications naming this third party.

Confirmed breach. Merged as one breach: 7 regulatory filings. The filings describe hacking. Intrusion May 15, 2023–Jun 1, 2023, discovered Jun 1, 2023 — the first regulatory filing landed 63 days later (flagged late). 650,521 individuals reported across the linked filings. Data reported: Government ID, PHI, Health (basic), and 4 more. Notifications rolled out on a 47-day schedule across 7 filings beginning Aug 3, 2023. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental

Notification delay

63days

Discovered → first regulatory filing

Discovery variance

51days

Range of discovered_at dates across filings

Filing span

47days

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 clocksLeak gap✗ Leak >180dFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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