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ATF hit by ransomware attack

Incident
First reported
Last updated
Happening score
H score 51
1 unique sources, 1 articles

Summary

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The ATF confirmed a system compromise after the Qilin ransomware gang added the agency to its leak portal, creating a major incident that required immediate containment. The affected environment was a standalone system separate from the enterprise network, and the agency said there was no indication that ATF eForms or other systems were affected. ATF cut connections, launched incident-response and forensic work, and said its operations were not impacted.

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Timeline

  1. 27.08.2026 11:13 1 articles · 11h ago

    Qilin adds ATF to dark web data leak portal

    Campaign Scope Update

    Qilin added the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives to its dark web data leak portal on Wednesday, but did not say whether it had stolen files from ATF's systems or demanded a ransom.

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  2. 27.08.2026 11:13 2 articles · 11h ago

    ATF confirms standalone system breach

    Initial Disclosure

    ATF said a standalone system was breached in a "major incident," that the impacted system operates separately from the ATF enterprise network, and that there is no indication the incident affected the ATF enterprise network, the ATF eForms system, or any other ATF system. ATF terminated connections to the affected environment, started incident-response and forensic activities, coordinated with the Department of Justice, and said its operations were not affected.

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