FBI Investigates Unauthorized Wi-Fi Network on Delta Flight 591

Delta Air Lines Inc. is investigating the brief activation of an unauthorized Wi-Fi network on Flight 591 during a trip from Las Vegas to Atlanta on August 11, 2026. The incident occurred immediately following the DEFCON hacking and security conference in Las Vegas.

Flight crews deactivated the Boeing 757's Wi-Fi for approximately 30 minutes as a precautionary measure. Delta officials confirmed that no emergency was declared and there was no breach of the company's internal systems. The airline stated that the "safety of flight was never in question and no aircraft operating systems were affected."

The Federal Bureau of Investigation is currently coordinating with local and corporate partners to examine the nature of the unauthorized network activation.