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Oklahoma Tax Commission

2025-03-31 · Severity 7/10 — High · Data_breach
Incident Summary

The Oklahoma Tax Commission experienced a data breach lasting 18 months, from July 2024 to December 2025, that went undetected and exposed taxpayers' personal information. The breach was reported via a filing disclosed around March 31, 2025.

Data Types Compromised
personal information taxpayer data
Sources
https://databreaches.net/2026/04/17/oklahoma-state-tax-commission-fails-to-notice-data-breach-for-18-months/?pk_campaign=feed&pk_kwd=oklahoma-state-tax-commission-fails-to-notice-data-breach-for-18-months
Details
Records Affected
Unknown
Industry
Government
Headquarters
United States
Date Reported
2025-03-31
Related Breaches

No related breaches in the last 90 days.