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    Updated 16 days ago

    United Federation of Teachers Data Breach

    ▼ Key takeaways

    • •Reports suggest a potential breach involving United Federation of Teachers.
    • •Discovered on September 18, 2026.
    • •Possible data exposed: Legal case files, Grievance and arbitration files, Disciplinary appeal decisions, Personnel case files, Collective bargaining agreements, Memoranda of understanding, Memoranda of agreement, Side letters, Health-benefit-fund case materials.
    • •Affects individuals in: New York.
    • •Confirmation level: Based on reports.

    Detailed summary

    Ransomware.live reported on September 18, 2026, that the United Federation of Teachers was listed as a victim by the N0n ransomware group. The available report identifies the incident as affecting the union and describes an alleged archive containing union legal case materials, personnel case files, labor-contract documents, and health-benefit-fund case materials. The report is not an official breach notification from the union or a government regulator.

    The reported archive was described as containing approximately 181,420 documents, but no entity-level number of affected individuals was provided. The available information does not confirm exposure of Social Security numbers, bank or payment information, or clinical medical records. No official consumer notification, regulator filing, lawsuit, or resolution was identified in the consulted sources. Further details, including the scope of affected individuals and any confirmed data exposure, remain unknown.

    Data possibly involved

    • Legal case files
    • Grievance and arbitration files
    • Disciplinary appeal decisions
    • Personnel case files
    • Collective bargaining agreements
    • Memoranda of understanding
    • Memoranda of agreement
    • Side letters
    • Health-benefit-fund case materials

    Company Response Timeline

    Breach Occurred

    Sep 18, 2026

    Company Discovered

    Sep 18, 2026

    Regulator Notified

    Unknown

    Consumers Notified

    Unknown

    0 days to discover

    Breach Verification Status

    Reports Only

    Current

    Initial dark web reports of potential breach

    Company Confirmed

    Company has acknowledged the breach

    Regulator Confirmed

    Confirmed by regulatory authorities

    Note: Breach verification can take time. Information may evolve as more details become available from companies and regulators.

    Case Status:
    Monitoring

    We're monitoring this situation for developments.

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