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type: incident · created: 2026-08-28 · updated: 2026-09-18 · tags: [cyber, incident] · confidence: high · severity: high · affected_sectors: [government] · au_impact: false

The US Bureau of Alcohol, Tobacco, Firearms and Explosives confirmed that one of its systems was compromised after the Qilin ransomware group added the agency to its dark-web leak portal. The ATF described the affected asset as a standalone system operating separately from its enterprise network, said it had terminated connections to the environment, and confirmed that incident-response and forensic work is running with the Department of Justice; it said there is no indication that the eForms system or any other ATF system was affected.

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