HackingHealthcareTechnologyHealthcareVulnerability ExploitData ExfiltratedTargetedPIIIdentity (basic)LowContained

NASCO

bd_ffb048d919d7530a · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 12, 2023

Filed

Oct 27, 2023

To disclose

15 weeks

Affected

680state residents only

Linked

17 records

Confidence

66%

Full breach record for NASCO →3 incidents on file

NASCO, a healthcare benefits administrator, notified Montana residents of a cybersecurity incident involving its MOVEit Transfer instance. A threat actor acquired personal information from NASCO's MOVEit server on May 30, 2023. NASCO discovered the incident on July 12, 2023, decommissioned the affected server, engaged forensic investigators, and notified law enforcement. Affected data included personal information of health plan members. NASCO offered 24 months of credit monitoring via Experian.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 43 days

discovery → filing · 15 weeks / 107 days

May 30, 2023

Begins

Jul 12, 2023

Discovered

Oct 27, 2023

Filed

vs. sector median

+6 wks slower

This filing is one of 17 records about the same incident.View merged incident

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Vermont State AGbd_a10a2ec406bd2fd72023-10-27Verified by operator
Oregon State AGbd_aa31f139773717df2023-10-27Verified by operator
California State AGbd_da6299b7281a604f2023-10-27Verified by operator
Washington State AGbd_f61696cdfa81c4df2023-10-27Verified by operator

Show 6 more filings ↓up to 75d gap

Maine State AGbd_27541ee9c5b7e6e72023-10-28 · +1dVerified by operator
South Carolina State AGbd_1a92f137101f29bd2023-10-30 · +3dVerified by operator
New Hampshire State AGbd_70967d52d87f8c3a2023-11-03 · +7dVerified by operator
Vermont State AGbd_d55aa1ea3b2002af2024-01-08 · +73dVerified by operator
Maine State AGbd_3b3b709830689a452024-01-10 · +75dVerified by operator
California State AGbd_5dcd476cd7204fbf2024-01-10 · +75dVerified by operator

Showing first 10 of 16 linked disclosures.

Name: NASCO
norm: nasco
Domain: nasco.com

Name: NASCO
norm: nasco
Domain: nasco.com
Industry: HealthcarellmTechnologyllm

Discovered: Jul 12, 2023
Breach occurred: May 30, 2023
Undetected for: 43 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 680state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: notified law enforcement authorities
Initial access: exploit_public_facing

During the incident: Promptly took steps to secure its systems
Launched an investigation with the support of a leading cybersecurity firm
Notified law enforcement authorities
Decommissioned the MOVEit server affected by the attack
Stopped using MOVEit
Offering a complimentary 24-month membership to Experian’s IdentityWorks
Changes made: Implemented and are continuing to implement additional procedures to further strengthen the security of our IT system environments
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(107 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 8 states

View merged incident ↗

Vermont State AGOct 27 · first

Oregon State AGOct 27 · first

California State AGOct 27 · first

Washington State AGOct 27 · first

Montana State AGOct 27 · first · this page

Maine State AG+1d

South Carolina State AG+3d

New Hampshire State AG+7d

Vermont State AG+73d

Maine State AG+75d

California State AG+75d

Pattern: first filing Oct 27 (VT), last Jan 10 (CA) — a 75-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 16 — the full spread may be wider.

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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-804.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 27, 2023
Raw hash: bd308df00c0e01cd18eaaa1d743a39273b07021a362d578ea219437bfdd66549

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityNASCO

Victim entityNASCO

Incidentdiscovered Jul 12, 2023

Stated responsePromptly took steps to secure its systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov