DOJ Firearms Agency Confirms Breach After Qilin Ransomware Claims

The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) confirmed a cyberattack on a system containing investigation-related information, after the Qilin ransomware gang claimed responsibility for the breach. ATF separately confirmed to BleepingComputer that the incident is a “major incident.”

The scope of compromised investigation data, including whether it includes information on active cases or informants, was not disclosed.