HackingFinancial ServicesTechnologyFinanceVulnerability ExploitZero-DayData ExfiltratedSupply Chain (3P Vendor)Customer Data InvolvedGovernment IDIdentity (basic)CVE-2023-34362CriticalContained

Milliman Solutions LLC

bd_8674a4bac38b2e61 · schema v1 · pii pii-v1

Severity

Critical

Discovered

Jun 16, 2023

Filed

Jul 17, 2023

To disclose

4 weeks

Affected · nationwide

1,280,8234,206 in this filing

Linked

6 filings

Confidence

66%

Full breach record for Milliman Solutions LLC →2 incidents on file

Milliman Solutions LLC reported a data breach involving its third-party vendor, Pension Benefit Information, LLC (PBI). PBI utilized Progress Software's MOVEit Transfer software, which contained a zero-day vulnerability (CVE-2023-34362). An unauthorized actor accessed PBI's servers on May 29-30, 2023, and exfiltrated data. The breach affected approximately 1,280,823 individuals nationwide, including 4,206 Maine residents. Affected data included names and Social Security Numbers. Notification to consumers began on July 17, 2023, offering 12 months of credit monitoring and identity theft restoration services.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jun 16, 2023 → Filed with AG Jul 17, 202331d ⏱ ME AG >30d4 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 18 days

discovery → filing · 4 weeks / 31 days

May 29, 2023

Begins

Jun 16, 2023

Discovered

Jul 17, 2023

Filed

vs. sector median

4 wks faster

This filing is one of 6 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 (5) · sorted by filing gap

Oregon State AGbd_24ccb026f721af632023-07-17Candidate
Indiana State AGbd_3919dcb3a8e2950b2023-07-17Verified
Montana State AGbd_3b1222619a7fe87f2023-07-17Verified
Massachusetts State AGbd_5359527b1010b4882023-07-17Verified

Show 1 more filing ↓

Washington State AGbd_7d137035535ea7be2023-07-17Verified

Name: Milliman Solutions LLC
norm: milliman solutions
Domain: milliman.com

Name: Milliman Solutions LLC
norm: milliman solutions
Domain: milliman.com
Industry: Financial ServicesllmTechnologyllm

Discovered: Jun 16, 2023
Breach occurred: May 29, 2023 – May 30, 2023
Undetected for: 18 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 17, 2023
Affected individuals: 1,280,823state + nationwide
Data types: Government IDIdentity (basic)
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Filed data breach notice with Maine Attorney General
Initial access: exploit_public_facing
CVE references: CVE-2023-34362

During the incident: PBI conducted a manual review of its data to confirm the identities of individuals potentially affected
Milliman Solutions reconciled the data and informed its clients of the scope of individuals whose information may have been affected
PBI retained Kroll to provide credit monitoring, fraud consultation, and identity theft restoration services to all affected Maine residents for 12 months
Changes made: Provided 12 months of credit monitoring, fraud consultation, and identity theft restoration services through Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(31 days from discovery to filing)
Compliance flags: ME AG >30d · 31dME CRA notice due
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jun 16, 2023
→ Filed with AG: Jul 17, 2023
31d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jun 16, 2023 → Filed with AG: Jul 17, 2023	31d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Oregon State AGJul 17 · first

Indiana State AGJul 17 · first

Montana State AGJul 17 · first

Massachusetts State AGJul 17 · first

Washington State AGJul 17 · first

Maine State AGJul 17 · 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.

Source URL: https://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/a98d9ae9-b898-4aaa-8dde-de04551aaedb.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 17, 2023
Raw hash: a1172aeb44ea566559697ac78e2dbdde3f798c184f48af7b6ce56cb85b323cbf

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityMilliman Solutions LLC

Victim entityMilliman Solutions LLC

Incidentdiscovered Jun 16, 2023

Stated responsePBI conducted a manual review of its data to confirm the identities of individuals potentially affected

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov