HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedGovernment IDIdentity (basic)CriticalContained

Medical Management Resource Group, L.L.C.

bd_f877c41e8ddec976 · schema v1 · pii pii-v1

Severity

Critical

Discovered

Jan 16, 2024

Filed

Feb 29, 2024

To disclose

6 weeks

Affected · nationwide

2,264,157394 in this filing

Linked

10 filings

Confidence

66%

Full breach record for Medical Management Resource Group, L.L.C. →

Medical Management Resource Group (d.b.a. American Vision Partners) reported an external system breach (hacking) occurring on November 14, 2023, discovered on January 16, 2024. The incident affected 2,264,157 individuals, including 394 in Maine. Stolen data included names combined with driver's license numbers. The entity provided 24 months of credit monitoring via TransUnion.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jan 16, 2024 → Filed with AG Feb 29, 202444d ⏱ ME AG >30d6 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 63 days

discovery → filing · 6 weeks / 44 days

Nov 14, 2023

Begins

Jan 16, 2024

Discovered

Feb 29, 2024

Filed

vs. sector median

6 wks faster

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

Oregon State AGbd_4e04a4942e26df332024-02-29Verified
California State AGbd_9ade189a9c3aa1642024-02-29Verified
New Hampshire State AGbd_38d89641f60104632024-02-23 · +6dVerified
Vermont State AGbd_91b60a8f11bae7ec2024-02-15 · +14dVerified

Show 5 more filings ↓up to 28d gap

Indiana State AGbd_af0a4dfaa8d752532024-02-15 · +14dVerified
Montana State AGbd_cf67a71df73c00872024-02-15 · +14dVerified
Washington State AGbd_776968d28912f6052024-02-06 · +23dVerified
HHS OCRbd_7b7b956dbf6e412d2024-02-06 · +23dVerified by operator
Illinois State AGbd_666f9f3545487c7d2024-02-01 · +28dCandidate

Name: Medical Management Resource Group, L.L.C.
norm: medical management resource

Name: Medical Management Resource Group, L.L.C.
norm: medical management resource
Also named: Medical Management Resource Group, L.L.C.dba oflegal entity
American Vision Partnersdba oftrade name
Industry: Healthcarellm

Discovered: Jan 16, 2024
Breach occurred: Nov 14, 2023
Undetected for: 63 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 15, 2024
Affected individuals: 2,264,157state + nationwide
Data types: Government IDIdentity (basic)
Data elements: Driver's licence number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Filed data breach notice with Maine Attorney General
Initial access: exploit_public_facing

During the incident: Sent written notification to affected individuals
Offered TransUnion - Complimentary identity protection and credit monitoring services for 24 months
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(44 days from discovery to filing)
Compliance flags: ME AG >30d · 44d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jan 16, 2024
→ Filed with AG: Feb 29, 2024
44d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jan 16, 2024 → Filed with AG: Feb 29, 2024	44d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 10 states

View merged incident ↗

Illinois State AGFeb 1 · first

Washington State AG+5d

HHS OCR+5d

Vermont State AG+14d

Indiana State AG+14d

Montana State AG+14d

New Hampshire State AG+22d

Oregon State AG+28d

California State AG+28d

Maine State AG+28d · this page

Pattern: first filing Feb 1 (IL), last Feb 29 (ME) — a 28-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/1c20fc77-1b3a-44a9-81e0-362f8bed0912.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 29, 2024
Raw hash: 4fd1b6c65319288cb87d862433b30abcd5d94c539a585c2560f28959a5fa7fd0

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entityMedical Management Resource Group, L.L.C.

Victim entityMedical Management Resource Group, L.L.C.

Incidentdiscovered Jan 16, 2024

Stated responseSent written notification to affected individuals

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov