HackingHealthcareProfessional ServicesHealthcareVulnerability ExploitStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedPIIPHIIdentity (basic)Health (basic)LowContained

NASCO

bd_da6299b7281a604f · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 12, 2023

Filed

Oct 27, 2023

To disclose

15 weeks

Affected

Not disclosed

Linked

17 records

Confidence

66%

Full breach record for NASCO →3 incidents on file

NASCO, a benefits administration services provider for health plans, experienced a data security incident on May 30, 2023, involving its third-party file-sharing application, MOVEit Transfer by Progress Software. A threat actor exploited a vulnerability in MOVEit to acquire data, including personal and health information of NASCO's health plan customers. NASCO discovered the incident on July 12, 2023, and promptly secured its systems, launched a forensic investigation, and notified law enforcement. The affected MOVEit server was decommissioned. NASCO is offering 24 months of complimentary identity monitoring and credit monitoring services to affected individuals.

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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
Washington State AGbd_f61696cdfa81c4df2023-10-27Verified by operator
Montana State AGbd_ffb048d919d7530a2023-10-27Verified 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: HealthcarellmProfessional Servicesllm

Discovered: Jul 12, 2023
Breach occurred: May 30, 2023
Undetected for: 43 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIPHIIdentity (basic)Health (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1195 Supply Chain CompromiseT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified California Attorney General
Third party: via Progress Software
Initial access: supply_chain

During the incident: Took steps to secure its systems
Launched an investigation with the support of a leading cybersecurity firm
Notified law enforcement authorities
Decommissioned the affected MOVEit server
Discontinued use of MOVEit
Changes made: Implemented additional procedures to further strengthen the security of IT system environments
Offering a complimentary 24-month membership to Experian’s IdentityWorks
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

Washington State AGOct 27 · first

Montana State AGOct 27 · first

California 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://oag.ca.gov/ecrime/databreach/reports/sb24-575825
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: b5dfb4273658eab916669a41ff5c526bf01611b009d5fdd9def2471c544a2b6f

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityNASCO

Victim entityNASCO

Incidentdiscovered Jul 12, 2023

Stated responseTook steps to secure its systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov