HackingHealthcareFinancial ServicesHealthcareVulnerability ExploitData ExfiltratedTargetedIdentity (basic)Government IDMediumContained

Delta Dental of California and affiliates

bd_f9dd9d8c0025c2d4 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 1, 2023

Filed

Feb 9, 2024

To disclose

36 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

66%

Delta Dental of California and affiliates reported a data breach involving Progress Software's MOVEit Transfer application. Unauthorized actors exploited a vulnerability between May 27-30, 2023, accessing personal information including names, addresses, and government IDs. The company engaged forensic experts, patched the vulnerability, and is offering 24 months of identity monitoring to affected individuals.

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Vermont clock✗ VT AG >45 bday36 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 5 days

discovery → filing · 36 weeks / 253 days

May 27, 2023

Begins

Jun 1, 2023

Discovered

Feb 9, 2024

Filed

vs. sector median

+24 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_3928b2315b9e54502024-02-07 · +2dCandidate
California State AGbd_84d913a18ea5d62d2024-01-31 · +9dCandidate
New Hampshire State AGbd_9e88312a77fdbd762024-01-24 · +16dVerified
California State AGbd_ed716715756a40722024-03-14 · +34dVerified

Show 1 more filing ↓up to 57d gap

California State AGbd_b7d1eba67d9b03252023-12-14 · +57dCandidate

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

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: —
Notification sent: Feb 9, 2024
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
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: Offering 24 months of free identity monitoring services through Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 36 weeks(253 days from discovery to filing)
Compliance flags: VT AG >45 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

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

California State AG+48d

California State AG+55d

Vermont State AG+57d · this page

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://ago.vermont.gov/document/2024-02-09-willis-north-america-progress-software-moveit-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 9, 2024
Raw hash: 79768baefc8bf1b0c2879edcf6f8773251c00d42dbaaf5e9e58bf10546c62a21

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityDelta Dental of California and affiliates

Victim entityDelta Dental of California and affiliates

Incidentdiscovered Jun 1, 2023

Stated responseStopped access to the MOVEit software

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov