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Oklahoma Cheyenne and Arapaho Tribes say ransomware disrupted tribal systems

Databreaches •Dissent • February 18, 2026

Dysruption Hub reports: The Cheyenne and Arapaho Tribes of Oklahoma say a ransomware attack forced them to shut down tribal computer networks, disrupting email and phone service and temporarily suspending some operations as systems are restored and investigators work the case. Tribal Gov. Reggie Wassana said in a statement that the tribes were “targeted by a ransomware... Source

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Ransomware Attack Disrupts Cheyenne and Arapaho Tribes' Operations The Cheyenne and Arapaho Tribes in Oklahoma experienced a ransomware attack that forced the shutdown of tribal computer networks, disrupting email and phone services. The attack has led to the temporary suspension of some operations as systems are being restored and investigations are underway. 4 sources 68

Oklahoma Cheyenne and Arapaho Tribes say ransomware disrupted tribal systems

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