HackingFinancial ServicesFinanceCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Teamsters Union 25 Health Services & Insurance Plan

bd_cfa541e53d8df43b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 18, 2025

Filed

Sep 3, 2025

To disclose

16 days

Affected

13state residents only

Linked

6 filings

Confidence

66%

Full breach record for Teamsters Union 25 Health Services & Insurance Plan →

Teamsters Union 25 Health Services & Insurance Plan reported an external system breach (hacking) occurring on August 1, 2025, discovered on August 18, 2025. The incident affected 13 Maine residents, involving personal identifiers. The organization engaged third-party specialists, isolated the network, and provided 12 months of credit monitoring to affected individuals.

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Maine clockDiscovered Aug 18, 2025 → Filed with AG Sep 3, 202516d ✓ ME AG ≤30d16 days 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 · 17 days

discovery → filing · 16 days

Aug 1, 2025

Begins

Aug 18, 2025

Discovered

Sep 3, 2025

Filed

vs. sector median

6 wks faster

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Nebraska State AGbd_6bc35c732ef888702025-09-03Verified
Massachusetts State AGbd_b1dcab681be67d6c2025-09-03Verified
New Hampshire State AGbd_dbae3845904e78bc2025-09-03Verified
HHS OCRbd_e5d5993ff23399652025-09-03Verified

Show 1 more filing ↓

Vermont State AGbd_ed7f8df2b704d1b62025-09-03Candidate

Name: Teamsters Union 25 Health Services & Insurance Plan
norm: teamsters union 25 health services insurance plan

Name: Teamsters Union 25 Health Services & Insurance Plan
norm: teamsters union 25 health services insurance plan
Industry: Financial Servicesllm

Discovered: Aug 18, 2025
Breach occurred: Aug 1, 2025
Undetected for: 17 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 3, 2025
Affected individuals: 13state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Filed notification with Maine Attorney General
Initial access: exploit_public_facing

During the incident: Isolated and secured its network
Engaged third-party specialists to assist with containing and investigating the activity
Provided written notification to potentially impacted Maine residents
Offered 12 months of credit monitoring and identity theft protection through TransUnion
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 days(16 days from discovery to filing)
Compliance flags: ME AG ≤30d · 16d
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: Aug 18, 2025
→ Filed with AG: Sep 3, 2025
16d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Aug 18, 2025 → Filed with AG: Sep 3, 2025	16d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 5 states

View merged incident ↗

Nebraska State AGSep 3 · first

Massachusetts State AGSep 3 · first

New Hampshire State AGSep 3 · first

HHS OCRSep 3 · first

Vermont State AGSep 3 · first

Maine State AGSep 3 · first · 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.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/641687af-85e1-4a3e-98c4-3258a192c637.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 3, 2025
Raw hash: 6054f955aa54abe5196609be360082971fbd6112dcddd7f463c61cbb769dba8a

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityTeamsters Union 25 Health Services & Insurance Plan

Victim entityTeamsters Union 25 Health Services & Insurance Plan

Incidentdiscovered Aug 18, 2025

Stated responseIsolated and secured its network

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov