The Bureau of Alcohol, Tobacco, Firearms and Explosives has notified Congress of a major cybersecurity incident after a ransomware gang claimed responsibility for breaching the agency's systems.
The ATF joins a growing list of federal agencies that have disclosed significant cyber incidents in recent years. A ransomware group has publicly claimed the hack, though specific details about compromised data remain unclear.
The agency's notification to Congress triggers mandatory reporting requirements for major security breaches affecting government systems. The ATF has not yet disclosed the full scope of the intrusion or whether sensitive information was accessed.
This incident underscores ongoing vulnerabilities across federal agencies despite increased cybersecurity investments. Ransomware groups continue targeting government entities, often publishing stolen data to pressure organizations into paying demands.
The ATF is working with federal cybersecurity authorities to assess the breach and contain the threat. Additional details about the incident's timeline and impact are expected as the investigation progresses.
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The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) has confirmed a "major incident" involving a compromised system following claims by the Qilin ransomware group.