US DHS finds no evidence of cyberattack in FAA outage

US Homeland Security Secretary Markwayne Mullin said no evidence of a cyberattack or rogue AI was found in the FAA telecommunications outage that caused a nationwide ground stop, but investigators aren't ruling it out. Evidence points to mechanical failure. Around 7,000 flights were delayed or cancelled. Mullin called it a national security risk, urging Congress to fund air traffic control modernisation.