HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedTargetedIdentity (basic)Government IDHighContained

Teamsters Local Union No. 174

bd_5c706f4cf54da9b6 · schema v1 · pii pii-v1

Severity

High

Discovered

Jun 16, 2025

Filed

Jul 16, 2025

To disclose

4 weeks

Affected

37,828state residents only

Confidence

68%

Full breach record for Teamsters Local Union No. 174 →

Teamsters Local Union No. 174 notified Washington AG of a cyber incident discovered on June 16, 2025, involving unauthorized access to files on its server. The breach potentially exposed names, dates of birth, and Social Security numbers of 37,828 Washington residents. The union engaged experts for investigation and remediation, offering 12 months of free credit monitoring.

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Washington clock✓ WA AG ≤30d4 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

discovery → filing · 4 weeks / 30 days

Jun 16, 2025

Discovered

Jul 16, 2025

Filed

vs. sector median

15 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed37,828 affectedView incident

Name: Teamsters Local Union No. 174
norm: teamsters local union no 174

Name: Teamsters Local Union No. 174
norm: teamsters local union no 174
Industry: Professional Servicesllm

Discovered: Jun 16, 2025
Materiality determined: —
Notification sent: Jul 15, 2025
Affected individuals: 37,828state-resident count only
Data types: Identity (basic)Government ID
Data elements: NameSocial Security numberDate of birth
WA-stated cause: Cyberattack
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found while ongoingContained same day
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Initial access: valid_credentials

During the incident: Took steps to secure its systems
Engaged with experts to assist in the investigation and remediation of this incident
Investing in new and improved hardware systems
Enhancing our security and monitoring protocols
Working to improve all facets of our cyber security moving forward
Contracted with ID Resolution to offer our current active members Identity Management and Identity Theft services
Extend 12 months of free credit monitoring services to everyone
Changes made: Investing in new and improved hardware systems
Enhancing our security and monitoring protocols
Working to improve all facets of our cyber security moving forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 days from discovery to filing)
Compliance flags: WA AG ≤30d
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.

Status: No extraction artifact recorded for this disclosure.

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA34021.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 16, 2025
Raw hash: 94d1782ed00b9a5a11355d8c59f9ef07721757121e396e9f2015c12bd9a85b51

Reporting entityTeamsters Local Union No. 174

Victim entityTeamsters Local Union No. 174

Incidentdiscovered Jun 16, 2025

Stated responseTook steps to secure its systems

ComplianceWA AG ≤30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com