HackingHealthcareFinancial ServicesHealthcareVulnerability ExploitN-DayData ExfiltratedCustomer Data InvolvedTargetedPIIIdentity (basic)LowContained

Delta Dental of California and affiliates

bd_9e88312a77fdbd76 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jun 1, 2023

Filed

Jan 24, 2024

To disclose

34 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

65%

Delta Dental of California affiliates reported a data security incident involving the MOVEit file-transfer software. Unauthorized actors exploited a vulnerability between May 27-30, 2023. The company discovered the incident on June 1, 2023, engaged forensic experts, and notified law enforcement. Personal information was acquired. Affected individuals were offered 24 months of identity monitoring via Kroll.

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Incident timeline

undetected · 5 days

discovery → filing · 34 weeks / 237 days

May 27, 2023

Begins

Jun 1, 2023

Discovered

Nov 27, 2023

Scope determined

Jan 24, 2024

Filed

vs. sector median

+21 wks slower

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

California State AGbd_84d913a18ea5d62d2024-01-31 · +7dCandidate
California State AGbd_3928b2315b9e54502024-02-07 · +14dCandidate
Vermont State AGbd_f9dd9d8c0025c2d42024-02-09 · +16dVerified
California State AGbd_b7d1eba67d9b03252023-12-14 · +41dCandidate

Show 1 more filing ↓up to 50d gap

California State AGbd_ed716715756a40722024-03-14 · +50dVerified

Name: National Vision Holdings, Inc.
norm: national vision

Name: Delta Dental of California and affiliates
norm: delta dental of california
Domain: www1.deltadentalins.com
Industry: HealthcarellmFinancial Servicesllm

Discovered: Jun 1, 2023
Breach occurred: May 27, 2023 – May 30, 2023
Undetected for: 5 daysoccurrence → discovery
Materiality determined: Nov 27, 2023
Notification sent: —
Affected individuals: Not disclosed
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 of the incident and have been cooperating with them
Initial access: exploit_public_facing

During the incident: Stopped access to the MOVEit software
Removed the malicious files
Conducted a thorough analysis of the MOVEit database
Applied the recommended patches
Reset administrative passwords to the MOVEit system
Enhanced unauthorized access monitoring related to MOVEit Transfer file access, malicious activity, and ransomware activity
Engaged independent third-party experts in computer forensics, analytics, and data mining
Notified law enforcement of the incident and have been cooperating with them
Changes made: Applied the recommended patches
Enhanced unauthorized access monitoring related to MOVEit Transfer file access, malicious activity, and ransomware activity
Offering free identity monitoring services through Kroll for twenty-four months
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 34 weeks(237 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 3 states

View merged incident ↗

California State AGDec 14 · first

New Hampshire State AG+41d · this page

California State AG+48d

California State AG+55d

Vermont State AG+57d

California State AG+91d

Pattern: first filing Dec 14 (CA), last Mar 14 (CA) — a 91-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/national-vision-20240124.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 24, 2024
Raw hash: 12b2267c9a8d2688a503204f649dc70fcd14445b04828e59e0e5114fe00f9a99

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityNational Vision Holdings, Inc.

Victim entityDelta Dental of California and affiliates

Incidentdiscovered Jun 1, 2023

Stated responseStopped access to the MOVEit software

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov