HackingHealthcareHealthcareData ExfiltratedData PublishedCustomer Data InvolvedHealth (basic)Identity (basic)Government IDCriticalContained

DentaQuest, LLC

bd_8bbfa14e7133707c · schema v1 · pii pii-v1

Severity

Critical

Discovered

May 20, 2026

Filed

Jul 16, 2026

To disclose

8 weeks

Affected

522,000state residents only

Linked

19 filings

Confidence

66%

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

DentaQuest LLC notified Massachusetts residents of a data breach occurring May 17-20, 2026. Unauthorized individuals accessed personal identification and dental/vision health information, which was subsequently posted on the internet. DentaQuest engaged cybersecurity experts, reported the incident to law enforcement, and offered 24 months of identity monitoring via Kroll.

J jump to incidentP pin to compareR raw source

Massachusetts clock⏱ MA AG >30d8 weeks discovery → filing

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

Rhode Island State AGbd_1133bd1e67e874152026-07-16Verified
Washington State AGbd_36645eac8bc688a62026-07-16Verified
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: 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: —
Affected individuals: 522,000state-resident count only
Data types: Health (basic)Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1114 Email Collection
Threat actor: External

During the incident: Reported the incident to law enforcement
Engaged leading, independent cybersecurity experts
Offered 24 months of identity monitoring by Kroll
Changes made: Engaged cybersecurity experts
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: 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 · 8 states

View merged incident ↗

Rhode Island State AGJul 16 · first

Washington State AGJul 16 · first

Massachusetts 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 (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/2026-1155-dentaquest-llc/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: 1c54cf77c34e80d203590a84e147d3394553f63e8ce0eed48238902e13bb47b7

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityDentaQuest, LLC

Victim entityDentaQuest, LLC

Incidentdiscovered May 20, 2026

Stated responseReported the incident to law enforcement

ComplianceMA AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov