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Oklahoma State Tax Commission Fails To Notice Data Breach for 18 Months

ID: 67b3ce06-fd3e-5413-bba7-bdcecddeeade

STIX ID: report--67b3ce06-fd3e-5413-bba7-bdcecddeeade

Feed Name: DataBreaches.Net

Threat Score
45/100

Date Published: 2026-04-17

Date Updated: 2026-04-19

Author: Dissent

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A reported 18-month breach at the Oklahoma Tax Commission (July 2024–Dec 2025) allowed unauthorized access to certain taxpayers' W-2 and 1099 files; the agency only detected the activity in December and filings confirm at least 14 Maine residents affected while the overall scope remains unclear.

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