HackingHealthcareHealthcareVulnerability ExploitStolen CredentialsData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHealth (basic)PHICriticalContained

Excelsior Orthopaedics, LLC

bd_c9fe70461413b0eb · schema v1 · pii pii-v1

Severity

Critical

Discovered

Jun 23, 2024

Filed

Aug 29, 2025

To disclose

14 months

Affected · nationwide

394,75224 in this filing

Linked

14 records

Confidence

65%

Full breach record for Excelsior Orthopaedics, LLC →

Excelsior Orthopaedics, LLP, a healthcare provider, reported a cybersecurity incident discovered on June 23, 2024, involving unauthorized access to its network between June 18 and June 27, 2024. The breach compromised patient and employee data, including names, SSNs, medical info, and health insurance details. Approximately 394,752 individuals were affected, including 24 Maine residents. Excelsior engaged forensic investigators, isolated systems, reset credentials, and reported the incident to the FBI. Affected individuals were offered 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d14 months 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 · 5 days

discovery → filing · 14 months / 432 days

Jun 18, 2024

Begins

Jun 23, 2024

Discovered

Aug 29, 2025

Filed

vs. sector median

+53 wks slower

This filing is one of 14 records about the same incident.View merged incident

A leak claim by monti about this victim was first seen 416 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Vermont State AGbd_72914f9f101271012025-09-02 · +4dVerified by operator
New Hampshire State AGbd_92f6df0276dccd5b2025-09-02 · +4dVerified by operator
Maryland State AGbd_363c3e7a23ad9f0e2025-11-13 · +76dVerified by operator
New Hampshire State AGbd_2afc63efdc3046202025-01-13 · +228dVerified by operator

Show 6 more filings ↓up to 373d gap

Montana State AGbd_76cf493d1fa747b22025-01-07 · +234dVerified by operator
Massachusetts State AGbd_8bb0c75c7df2dc022025-01-07 · +234dVerified by operator
Maine State AGbd_e5fe309e68f4ebbd2025-01-07 · +234dVerified
Indiana State AGbd_0323801445708f2c2024-12-31 · +241dVerified by operator
Nebraska State AGbd_9e0fe91e91c379cf2024-12-31 · +241dVerified
Nebraska State AGbd_685d9a01864afc332024-08-21 · +373dVerified

Showing first 10 of 13 linked disclosures.

Name: Wilson, Elser, Moskowitz, Edelman & Dicker LLP
norm: wilson elser moskowitz edelman dicker
Domain: wilsonelser.com

Name: Excelsior Orthopaedics, LLC
norm: excelsior orthopaedics
Domain: excelsiorortho.com
Industry: Healthcarellm

Discovered: Jun 23, 2024
Breach occurred: Jun 18, 2024 – Jun 27, 2024
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 25, 2024
Affected individuals: 394,752state + nationwide
Data types: Identity (basic)Government IDHealth (basic)PHI
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified the FBI and cooperated with law enforcement investigations
Initial access: exploit_public_facing

During the incident: Engaged a specialized third-party cybersecurity firm to help secure the environment and conduct a comprehensive forensic investigation
Disconnected all external access to the network
Isolated suspect equipment
Changed credentials across the organization
Reported this incident to the FBI and cooperated with law enforcement investigations
Changes made: Deployed new security tools
Redesigned key system and business processes
Partnered with a first-in-class managed security provider
Implemented enhanced internal security awareness campaigns and system alerts
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 months(432 days from discovery to filing)
Compliance flags: Leak >180dME AG >30d · 432d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jun 23, 2024
→ Filed with AG: Aug 29, 2025
432d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jun 23, 2024 → Filed with AG: Aug 29, 2025	432d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 8 states

View merged incident ↗

Nebraska State AGAug 21 · first

Indiana State AG+132d

Nebraska State AG+132d

Montana State AG+139d

Massachusetts State AG+139d

Maine State AG+139d

New Hampshire State AG+145d

Maine State AG+373d · this page

Vermont State AG+377d

New Hampshire State AG+377d

Maryland State AG+449d

Pattern: first filing Aug 21 (NE), last Nov 13 (MD) — a 449-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 13 — 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.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/81189f91-7d24-4027-83e2-8e138b94b13f.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 29, 2025
Raw hash: 1d93205899b050d905469d7f29dd0f5db723e7d5fe83bd90100b05857de9ef40

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityWilson, Elser, Moskowitz, Edelman & Dicker LLP

Victim entityExcelsior Orthopaedics, LLC

Incidentdiscovered Jun 23, 2024

Stated responseEngaged a specialized third-party cybersecurity firm to help secure the environment and conduct a comprehensive forensic investigation

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov