DisclosureLens
HackingFinancial ServicesProfessional ServicesFinanceVulnerability ExploitSupply Chain (3P Vendor)Zero-DayData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDCVE-2023-34362HighContained

MILLIMAN, INC.

bd_847189c2c427ed3b · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 21, 2023

Filed

Aug 14, 2023

To disclose

24 days

Affected · nationwide

44,415160 in this filing

Linked

10 filings

Confidence

50%
Full breach record for MILLIMAN, INC. →5 incidents on file

Milliman, Inc., a provider of administrative services for employee benefit and pension plans, reported a data breach that occurred through a third-party vendor, Pension Benefit Information, LLC (PBI). PBI utilized the MOVEit Transfer software, which contained a zero-day vulnerability (CVE-2023-34362). Between May 29 and May 30, 2023, an unauthorized third party exploited this vulnerability to access and download data from PBI's servers. The breach was discovered on July 21, 2023, and affected personal information, including names and Social Security numbers.

Maine clockDiscovered Jul 21, 2023 → Filed with AG Aug 14, 202324d ✓ ME AG ≤30d24 days discovery → filing

Incident timeline

undetected · 53 days
discovery → filing · 24 days

May 29, 2023

Begins

Jul 21, 2023

Discovered

Aug 14, 2023

Filed

vs. sector median

7 wks faster

This filing is one of 10 filings about the same incident.View merged incident
Part of Pension Benefit Information, LLC supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

Show 5 more filings ↓up to 4d gap

Filing propagation · 10 filings · 9 states

View merged incident ↗
California State AGAug 14 · first
Indiana State AGAug 14 · first
Massachusetts State AGAug 14 · first
Washington State AGAug 14 · first
Oregon State AGAug 14 · first
Idaho State AGAug 14 · first
Montana State AGAug 14 · first
Maine State AGAug 14 · first · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.