HackingCustomer Data InvolvedData ExfiltratedFinancial accountHealth (basic)Identity (basic)Government IDMediumContained

A-O-MGS, P.L.L.C.

bd_0a32e3c0690ea4e7 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 7, 2026

Filed

Aug 4, 2026

To disclose

17 weeks

Affected

4state residents only

Linked

2 filings

Confidence

67%

Full breach record for A-O-MGS, P.L.L.C. →

A-O-MGS, P.L.L.C. d/b/a Arkansas Oral & Maxillofacial Surgeons notified Massachusetts residents of a data breach discovered on April 7, 2026. Unauthorized access resulted in the exposure of patient names, contact info, DOB, SSNs, medical records, and payment data. The company offered credit and identity monitoring services.

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Massachusetts clock✗ MA AG >90d17 weeks discovery → filing

Incident timeline

discovery → filing · 17 weeks / 119 days

Apr 7, 2026

Discovered

Aug 4, 2026

Filed

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

HHS OCRbd_eb25b60216fe51cb2026-07-31 · +4dCandidate

Name: A-O-MGS, P.L.L.C.
norm: a o mgs

Name: A-O-MGS, P.L.L.C.
norm: a o mgs
Also named: A-O-MGS, P.L.L.C.dba oflegal entity
Arkansas Oral & Maxillofacial Surgeonsdba oftrade name

Discovered: Apr 7, 2026
Materiality determined: —
Notification sent: Jul 1, 2026
Affected individuals: 4state-resident count only
Data types: Financial accountHealth (basic)Identity (basic)Government ID
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Initiated an investigation
Stop any unauthorized access to our environment
Secure our systems
Offering you complimentary credit monitoring, health information monitoring, and identity theft protection services
Changes made: Offering you complimentary credit monitoring, health information monitoring, and identity theft protection services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(119 days from discovery to filing)
Compliance flags: MA AG >90d
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 · 2 filings · 2 states

View merged incident ↗

HHS OCRJul 31 · first

Massachusetts State AG+4d · this page

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/2026-1285-arkansas-oral-maxillofacial-surgeons/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 4, 2026
Raw hash: 660ac8e2f5255d61f3cc4076d531ca2a95dc9f8244e590b1cd927160c1bba464

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityA-O-MGS, P.L.L.C.

Victim entityA-O-MGS, P.L.L.C.

Incidentdiscovered Apr 7, 2026

Stated responseInitiated an investigation

ComplianceMA AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov