The ATF is the latest federal government agency in recent years to notify Congress of a "major incident" involving its cybersecurity.
In Brief
Posted:
10:54 AM PDT · August 27, 2026
Image Credits:arah Reingewirtz / MediaNews Group / Getty Images
The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives, or ATF, says a cyberattack on one of its systems has been declared a “major incident,” a formal, legally defined classification that prompts a formal notification to lawmakers in Congress.
The ATF has classified a ransomware attack on its systems as a major incident, triggering mandatory congressional notification…
The agency says the affected system was isolated from its broader network and eForms platform but has not disclosed whether data…
US Justice Department investigating the breach
The ATF has confirmed suffering a cybersecurity incident after the Qilin ransomware group claimed to have targeted the agency.
ATF, the regulatory agency that enforces federal laws governing firearms and explosives in the United States, has confirmed that…
A likely Russian-speaking cybercriminal gang on Monday leaked what appear to be sensitive law enforcement files it stole from the…
