HackingFinancial ServicesTechnologyFinanceVulnerability ExploitStolen CredentialsZero-DaySupply Chain (3P Vendor)Data ExfiltratedTargetedIdentity (basic)Government IDCVE-2023-34362HighContained

MILLIMAN, INC.

bd_d73bf99edc9e75d7 · schema v1 · pii pii-v1

Severity

High

Discovered

Jun 16, 2023

Filed

Jul 20, 2023

To disclose

5 weeks

Affected

3,036state residents only

Confidence

66%

Full breach record for MILLIMAN, INC. →3 incidents on file

Milliman Solutions, LLC (dba Milliman Intelliscript) notified the NH AG of a breach involving its third-party vendor, Pension Benefit Information, LLC (PBI). PBI's MOVEit Transfer server was exploited via CVE-2023-34362 (zero-day) on May 29-30, 2023. Data of 3,036 NH residents was downloaded. Notification sent July 17, 2023, offering credit monitoring.

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Incident timeline

undetected · 18 days

discovery → filing · 5 weeks / 34 days

May 29, 2023

Begins

Jun 16, 2023

Discovered

Jul 20, 2023

Filed

vs. sector median

3 wks faster

Part of Pension Benefit Information, LLC supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed3,036 affectedView incident

Name: MILLIMAN, INC.
norm: milliman
Domain: us.milliman.com

Name: MILLIMAN, INC.
norm: milliman
Domain: us.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: 3,036state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General Consumer Protection Bureau
Initial access: exploit_public_facing
CVE references: CVE-2023-34362

During the incident: Stopped transferring data to PBI pending further evaluation of PBI’s information security practices
Evaluating potential vendor management and security enhancements
PBI patched the vulnerability in its MOVEit Transfer software
PBI is reviewing and enhancing its information security policies and procedures
PBI is providing written notification to impacted individuals on behalf of Milliman Solutions and its clients
Offering complimentary identity monitoring services through Kroll
Changes made: Reviewing and enhancing information security policies and procedures
Evaluating potential vendor management and security enhancements
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(34 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://mm.nh.gov/files/uploads/doj/remote-docs/milliman-solutions-dba-milliman-intelliscript-20230720.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 20, 2023
Raw hash: 5c972202a96cfade8a9b54a417863db7f287819406205b4ce1c44510e454bab6

Reporting entityMILLIMAN, INC.

Victim entityMILLIMAN, INC.

Incidentdiscovered Jun 16, 2023

Stated responseStopped transferring data to PBI pending further evaluation of PBI’s information security practices

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov