Social EngineeringHealthcareFinancial ServicesHealthcarePhishingStolen CredentialsData ExfiltratedData PublishedCustomer Data InvolvedEmployee Data InvolvedMulti-Stage ChainIdentity (basic)Government IDHealth (basic)PHICriticalContained

DentaQuest, LLC

bd_1133bd1e67e87415 · schema v1 · pii pii-v1

Severity

Critical

Discovered

May 20, 2026

Filed

Jul 16, 2026

To disclose

8 weeks

Affected · nationwide

15,000,0001,000 in this filing

Linked

19 filings

Confidence

64%

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

DentaQuest LLC, a dental and vision benefits provider, disclosed a data breach affecting over 15 million individuals nationwide, including at least 1,000 Rhode Island residents. The incident involved a social engineering attack (phishing) on May 17-19, 2026, where an employee provided credentials and MFA codes to a threat actor. The actor exfiltrated and published PHI, including SSNs, Medicare/Medicaid IDs, and health records, on the dark web. DentaQuest engaged CrowdStrike and Kroll, notified the FBI and HHS OCR, and is offering 24 months of identity monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d8 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 · 3 days

discovery → filing · 8 weeks / 57 days

May 17, 2026

Begins

May 20, 2026

Discovered

Jul 16, 2026

Filed

vs. sector median

4 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 49 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Washington State AGbd_36645eac8bc688a62026-07-16Verified
California State AGbd_3bc7925dd29517192026-07-16Verified
Texas State AGbd_4a5196edfadecf3b2026-07-17 · +1dVerified
Nebraska State AGbd_4d1ee0875da1a2ff2026-07-17 · +1dVerified

Show 6 more filings ↓up to 27d gap

Delaware State AGbd_f990f6918f923e332026-07-17 · +1dVerified
New Hampshire State AGbd_109ea4be4ea997032026-07-29 · +13dVerified
Massachusetts State AGbd_1e8db8bfc75827d62026-07-30 · +14dVerified
Idaho State AGbd_571c7231b18fedc32026-07-30 · +14dVerified
Idaho State AGbd_0510572adf88325a2026-08-03 · +18dVerified
Idaho State AGbd_b048476c6c1e18832026-08-12 · +27dVerified

Showing first 10 of 18 linked disclosures.

Name: NUTTER, MCCLENNEN & FISH, LLP
norm: nutter mcclennen fish

Name: DentaQuest, LLC
norm: dentaquest
Industry: HealthcarellmFinancial Servicesllm

Discovered: May 20, 2026
Breach occurred: May 17, 2026 – May 19, 2026
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 17, 2026
Affected individuals: 15,000,000state + nationwide
Data types: Identity (basic)Government IDHealth (basic)PHI
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified the United States Department of Health and Human Services, Office of Civil RightsNotified the FBINotified the three major credit reporting agencies
Initial access: phishing_link

During the incident: Engaged outside legal counsel, Nutter, McClennen & Fish
Engaged CrowdStrike Services to conduct an independent investigation
Implemented containment measures on May 20, 2026
Informed the FBI about the incident on May 21, 2026
Engaged Kroll Associates, Inc. to review the data accessed
Notified the United States Department of Health and Human Services, Office of Civil Rights
Notified the three major credit reporting agencies
Changes made: Offered 24 months of identity monitoring services by Kroll
Provided more employee training
Added new security measures
Increased monitoring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(57 days from discovery to filing)
Compliance flags: Leak >30d
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 · 11 filings · 9 states

View merged incident ↗

Washington State AGJul 16 · first

California State AGJul 16 · first

Rhode Island State AGJul 16 · first · this page

Texas State AG+1d

Nebraska State AG+1d

Delaware State AG+1d

New Hampshire State AG+13d

Massachusetts State AG+14d

Idaho State AG+14d

Idaho State AG+18d

Idaho State AG+27d

Pattern: first filing Jul 16 (WA), 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://riag.ri.gov/media/8956/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 16, 2026
Raw hash: 46e061643e96348ae538c674ea23e505c598fa9a33a0eb5b9117ab59c2ea8433

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityNUTTER, MCCLENNEN & FISH, LLP

Victim entityDentaQuest, LLC

Incidentdiscovered May 20, 2026

Stated responseEngaged outside legal counsel, Nutter, McClennen & Fish

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenanceriag.ri.gov