In the latest cybersecurity news, Cheyenne & Arapaho Tribes — a company operating in the US — has fallen victim to a ransomware attack conducted by the group rhysida. This data breach, discovered on 2026-02-17 21:24:18.596496, underscores the increasing need for proactive cybersecurity defenses as we continue through 2025.
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Incident Report
| Attribute | Information |
|---|---|
| Target Organization | Cheyenne & Arapaho Tribes |
| Threat Group | rhysida |
| Summary | Cheyenne & Arapaho Tribes The Cheyenne and Arapaho Tribes are a federally recognized united nation of two distinct peoples-the Tsistsistas (Cheyenne) and Hinono’ei (Arapaho)-with a historic alliance formed in the early 19th century. |
| Date of Breach | 2026-02-17 21:24:16.682873 |
| Discovery Date | 2026-02-17 21:24:18.596496 |
| Region | US |
| Target Domain | None |
| Business Sector | Public Sector |
Don’t wait for a breach to take action — stay informed and take control of your cybersecurity posture today.
You can also check if your organization’s data has been exposed using our free Data Breach Checker.
Disclaimer: HookPhish does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.
