Oklahoma Cheyenne and Arapaho Tribes Hit by Ransomware Attack

On February 18, 2026, the Cheyenne and Arapaho Tribes of Oklahoma suffered a ransomware attack that took down their computer networks. The incident disrupted email and telephone services, as well as some tribal operations, which were temporarily suspended during system restoration. Tribal Governor Reggie Wassana confirmed that the tribes had been targeted by ransomware but did not specify the strain or the perpetrators. No information was provided regarding the payment of a ransom or the extent of compromised data. Source: https://databreaches.net/2026/02/18/oklahoma-cheyenne-and-arapaho-tribes-say-ransomware-disrupted-tribal-systems/?pk_campaign=feed&pk_kwd=oklahoma-cheyenne-and-arapaho-tribes-say-ransomware-disrupted-tribal-systems