ATF notifies Congress of major ransomware incident
By The BriefBrief
The ATF notified Congress of a “major incident” involving its cybersecurity, making it the latest federal agency to report such an event. A ransomware gang also claimed it had hacked the agency.
WHO:ATF; ransomware gang
WHAT:ATF notified Congress of a “major incident” tied to a claimed ransomware hack.
WHEN:Reported Aug 27, 2026 at 1:54 PM ET
WHERE:USA
WHY:The notification and hack claim were triggered by a ransomware incident affecting the ATF’s cybersecurity.
Reporting from 2 identified publishers across this event arc.
