HackingHealthcareHealthcareStolen CredentialsData ExfiltratedData PublishedCustomer Data InvolvedHealth (basic)Identity (basic)Government IDPHIMediumContained

DentaQuest, LLC

bd_1e8db8bfc75827d6 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 20, 2026

Filed

Jul 30, 2026

To disclose

10 weeks

Affected

51state residents only

Linked

19 filings

Confidence

65%

Full breach record for DentaQuest, LLC →5 incidents on file

DentaQuest, a dental and vision benefits provider, notified Massachusetts residents of a data breach occurring between May 17 and May 20, 2026. Unauthorized individuals accessed and posted member data, including names, SSNs, Medicaid/Medicare numbers, and health information, on the internet. DentaQuest engaged forensic experts, reported to law enforcement, and offered 24 months of Kroll identity monitoring. The incident was discovered on May 20, 2026.

J jump to incidentP pin to compareR raw source

Massachusetts clock⏱ MA AG >30d10 weeks discovery → filing

Incident timeline

undetected · 3 days

discovery → filing · 10 weeks / 71 days

May 17, 2026

Begins

May 20, 2026

Discovered

Jul 30, 2026

Filed

vs. sector median

2 wks faster

This filing is one of 19 about the same incident.View merged incident

A leak claim by shinyhunters about this victim predates this filing by 63 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Idaho State AGbd_571c7231b18fedc32026-07-30Verified
New Hampshire State AGbd_109ea4be4ea997032026-07-29 · +1dVerified
Idaho State AGbd_0510572adf88325a2026-08-03 · +4dVerified
Idaho State AGbd_b048476c6c1e18832026-08-12 · +13dVerified

Show 6 more filings ↓up to 14d gap

Texas State AGbd_4a5196edfadecf3b2026-07-17 · +13dVerified
Nebraska State AGbd_4d1ee0875da1a2ff2026-07-17 · +13dVerified
Delaware State AGbd_f990f6918f923e332026-07-17 · +13dVerified
Rhode Island State AGbd_1133bd1e67e874152026-07-16 · +14dVerified
Washington State AGbd_36645eac8bc688a62026-07-16 · +14dVerified
California State AGbd_3bc7925dd29517192026-07-16 · +14dVerified

Showing first 10 of 18 linked disclosures.

Name: DentaQuest, LLC
norm: dentaquest

Name: DentaQuest, LLC
norm: dentaquest
Industry: Healthcarellm

Discovered: May 20, 2026
Breach occurred: May 17, 2026 – May 20, 2026
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 7, 2026
Affected individuals: 51state-resident count only
Data types: Health (basic)Identity (basic)Government IDPHI
Data elements: Social Security numberMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1114 Email CollectionT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: reported the incident to law enforcement
Initial access: valid_credentials

During the incident: Took immediate action to secure the network
Reported the incident to law enforcement
Began an investigation with leading, independent cybersecurity experts
Offering you identity theft monitoring by Kroll at no cost to you for 24 months
Engaged cyber security experts
Provided more employee training
Added new security measures and increased monitoring
Changes made: Provided more employee training
Added new security measures and increased monitoring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 10 weeks(71 days from discovery to filing)
Compliance flags: MA AG >30dLeak >30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 9 states

View merged incident ↗

Rhode Island State AGJul 16 · first

Washington State AGJul 16 · first

California State AGJul 16 · first

Texas State AG+1d

Nebraska State AG+1d

Delaware State AG+1d

New Hampshire State AG+13d

Idaho State AG+14d

Massachusetts State AG+14d · this page

Idaho State AG+18d

Idaho State AG+27d

Pattern: first filing Jul 16 (RI), last Aug 12 (ID) — a 27-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 18 — 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://www.mass.gov/doc/2026-1255-humana-inc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 30, 2026
Raw hash: f6038fdf07f23b349fed5db18ea38cfd63a2b0175fad09729dbee99729d35fcd

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityDentaQuest, LLC

Victim entityDentaQuest, LLC

Incidentdiscovered May 20, 2026

Stated responseTook immediate action to secure the network

ComplianceMA AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov