HackingHealthcareTechnologyHealthcareCustomer Data InvolvedData ExfiltratedIdentity (basic)Government IDHealth (basic)PHIHighContained

Trusteed Plan Services Corporation

bd_239543df911e11ae · schema v1 · pii pii-v1

Severity

High

Discovered

Dec 26, 2024

Filed

Sep 15, 2025

To disclose

38 weeks

Affected · nationwide

19,7754 in this filing

Linked

10 filings

Confidence

66%

Full breach record for Trusteed Plan Services Corporation →

Trusteed Plans Services Corporation (TPSC), a healthcare benefits provider, disclosed an external system breach discovered on December 26, 2024. Unauthorized access potentially exposed names, SSNs, DOBs, and PHI of 19,775 individuals. TPSC engaged forensic investigators, secured systems, and offered 12 months of credit monitoring via HaystackID. Notices were sent on September 15, 2025.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Dec 26, 2024 → Filed with AG Sep 15, 2025263d ⏱ ME AG >30d38 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 38 weeks / 263 days

Dec 26, 2024

Begins

Dec 26, 2024

Discovered

Sep 15, 2025

Filed

vs. sector median

+29 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

Oregon State AGbd_2784da27b9d225032025-09-15Verified
Montana State AGbd_2fd6c2009f8f2fd32025-09-15Verified
Washington State AGbd_4bf1c9fac6cb92602025-09-15Verified
Indiana State AGbd_7865db4bd7dd399f2025-09-15Verified

Show 5 more filings ↓up to 7d gap

Nebraska State AGbd_7c306950c9a0e7632025-09-15Verified
California State AGbd_e877db61aece8a952025-09-15Verified
Massachusetts State AGbd_24e85d893faf6a722025-09-16 · +1dVerified
HHS OCRbd_447f5e820983570c2025-09-17 · +2dVerified
New Hampshire State AGbd_6bb953f8b0288db22025-09-22 · +7dVerified

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

Name: Trusteed Plan Services Corporation
norm: trusteed plan
Industry: HealthcarellmTechnologyllm

Discovered: Dec 26, 2024
Breach occurred: Dec 26, 2024
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 15, 2025
Affected individuals: 19,775state + 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 ApplicationT1119 Automated Collection
Threat actor: External
Regulator citations: Filed notice with Maine Attorney General
Initial access: exploit_public_facing

During the incident: Engaged a specialized third-party cybersecurity firm to secure its computer systems and conduct a comprehensive investigation
Conducted a data mining exercise with the assistance of a third-party vendor to identify the individuals impacted
Engaged a third-party notification vendor to provide affected individuals with complimentary credit monitoring services
Discontinued all access to our network
Changed administrative credentials
Restored operations in a safe and secure mode
Changes made: Upgraded desktop operating systems
Increased firewall security
Further implementation of multi-factor authentication
Deployed additional security agents to monitor server and desktop activity
Engaged third-party vendor for internal assessments and external penetration testing
Encrypted data at rest
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 38 weeks(263 days from discovery to filing)
Compliance flags: ME AG >30d · 263dME resident >60d · 263d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Dec 26, 2024
→ Filed with AG: Sep 15, 2025
263d 30 days (soft) ME AG >30d
Maine
Discovered: Dec 26, 2024
→ Notified: Sep 15, 2025
263d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Dec 26, 2024 → Filed with AG: Sep 15, 2025	263d	30 days (soft)	ME AG >30d
Maine	Discovered: Dec 26, 2024 → Notified: Sep 15, 2025	263d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 9 states

View merged incident ↗

Oregon State AGSep 15 · first

Montana State AGSep 15 · first

Washington State AGSep 15 · first

Indiana State AGSep 15 · first

Nebraska State AGSep 15 · first

California State AGSep 15 · first

Maine State AGSep 15 · first · this page

Massachusetts State AG+1d

HHS OCR+2d

New Hampshire State AG+7d

Pattern: first filing Sep 15 (OR), last Sep 22 (NH) — a 7-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/a42ecd2f-e44d-4204-8e0d-6892f4d083de.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 15, 2025
Raw hash: f3505686c2ea589e7608d4993be78d59921ac2e6b557043547b1121ae070176b

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entityWilson, Elser, Moskowitz, Edelman & Dicker LLP

Victim entityTrusteed Plan Services Corporation

Incidentdiscovered Dec 26, 2024

Stated responseEngaged a specialized third-party cybersecurity firm to secure its computer systems and conduct a comprehensive investigation

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov