The FBI’s Atlanta field office is examining a reported wireless network interference incident that occurred on Delta flight 591 traveling from Las Vegas to Atlanta on Monday. The disruption took place one day following the conclusion of the DEF CON security conference held in Las Vegas.
According to communications intercepted via ACARS—the aircraft communications addressing and reporting system—pilots reported that passengers aboard the aircraft successfully interfered with the onboard Wi-Fi connectivity and broadcast an alternative signal. A social media account tracking publicly available ACARS messages documented the pilot communication, noting that the passengers involved had attended the cyber security conference earlier that week.
Passengers allegedly established an unauthorized wireless network bearing the name “Delta WiFi Fast” and configured it with a deceptive landing page intended to extract login credentials and personal information from unsuspecting users. This technique, commonly referred to as an “evil twin” attack in cybersecurity circles, is a long-established method wherein threat actors create counterfeit networks to capture sensitive data from connected devices.
Delta Air Lines confirmed aspects of the incident through company spokesperson Morgan Durrant, who stated that an unauthorized Wi-Fi network operated independently of Delta’s systems was detected aboard the aircraft for a limited duration. The airline emphasized that aircraft safety remained uncompromised throughout the incident and that critical operating systems were not affected. The legitimate onboard Wi-Fi service was temporarily deactivated for approximately 30 minutes as a result. No emergency was declared, and no passengers or crew faced danger.
FBI Atlanta confirmed it is investigating the matter but reported that no arrests have been made and agents did not meet the aircraft upon arrival. A representative indicated the bureau is coordinating with local and corporate partners regarding the incident but declined to provide additional details.
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