The Northwestern Mutual Life Insurance Company — May 2023 breach

Clustered 5 filings across 4 jurisdictions · filing window Jun 27, 2023 → Aug 21, 2023. View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

5 filings

States

Affected · reported

9,923

First → last filing

Jun 27, 2023 → Aug 21, 2023

Merge confidence

100%

incident inc_ac969c8fee364158 · merged by deterministic · confidence 100%

Part of the Progress Software Corporation supply-chain incident (2023) — at least 96 organizations filed notifications naming this third party.

Confirmed breach. Merged as one breach: 5 regulatory filings. The filings describe hacking. Intrusion May 30, 2023, discovered May 30, 2023 — the first regulatory filing landed 28 days later. 9,923 individuals reported across the linked filings. Data reported: Government ID, PII, and Identity (basic). Notifications rolled out on a 55-day schedule across 5 filings beginning Jun 27, 2023. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental

Notification delay

28days

Discovered → first regulatory filing

Discovery variance

1days

Range of discovered_at dates across filings

Filing span

55days

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 clocksMaine⏱ ME AG >30d · 69dMassachusetts✓ MA credit monitoring dueFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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