Qilin published approximately 6.3GB of files allegedly stolen from ATF’s legacy CALEA system, exposing investigative records while leaving eForms and other operational systems untouched.
ATF confirmed that hackers compromised a standalone computer system after the Qilin ransomware operation claimed the agency as a victim. Sources tell AmmoLand that gun-owner records were not exposed, but the bureau has not revealed whether other files were stolen.