Social EngineeringProfessional ServicesProfessional ServicesPhishingStolen CredentialsData ExfiltratedCustomer Data InvolvedPIIIdentity (basic)Health (basic)LowContained

United Steelworkers Union Local 286

bd_c11fd612d57709c0 · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 13, 2023

Filed

Apr 14, 2023

To disclose

9 weeks

Affected

Not disclosed

Confidence

64%

United Steelworkers Union Local 286 notified individuals that an unauthorized party accessed an employee email account between June 16 and July 18, 2022. The breach was discovered on February 13, 2023, following a forensic investigation. Personal information, including health insurance details, was accessed. The union offered complimentary credit monitoring and identity protection services.

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Incident timeline

undetected · 242 days

discovery → filing · 9 weeks / 60 days

Jun 16, 2022

Begins

Feb 13, 2023

Discovered

Apr 14, 2023

Filed

vs. sector median

10 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: United Steelworkers Union Local 286
norm: united steelworkers union local 286
Domain: usw286.org

Name: United Steelworkers Union Local 286
norm: united steelworkers union local 286
Domain: usw286.org
Industry: Professional Servicesllm

Discovered: Feb 13, 2023
Breach occurred: Jun 16, 2022 – Jul 18, 2022
Undetected for: 242 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)Health (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: phishing_link

During the incident: Secured the account
Commenced a prompt and thorough investigation
Engaged in extensive forensic investigation
Conducted manual document review
Offered complimentary Experian Identity Works Credit 3B membership
Changes made: Continually evaluate and modify practices and internal controls to enhance security and privacy
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(60 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

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://attorneygeneral.delaware.gov/wp-content/uploads/sites/50/2023/05/USW-Local-286-Consumer-Letter.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 14, 2023
Raw hash: abb467c227476e6b15d2a574ec73349243bb1d3c4fecf9591e754561f166ff15

Reporting entityUnited Steelworkers Union Local 286

Victim entityUnited Steelworkers Union Local 286

Incidentdiscovered Feb 13, 2023

Stated responseSecured the account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceattorneygeneral.delaware.gov