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Why was there an 'evil’ Delta airlines Wi-Fi network? The experts weigh in

A passenger set up an evil Wi-Fi network on a post-DEF CON Delta flight When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. As many attendees of this year’s DEF CON hacker conference departed Las Vegas recently, many unsuspecting passengers on Delta Flight 591 attempted to […]

By deepak · August 15, 2026 · 3 min read

A passenger set up an evil Wi-Fi network on a post-DEF CON Delta flight

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As many attendees of this year’s DEF CON hacker conference departed Las Vegas recently, many unsuspecting passengers on Delta Flight 591 attempted to access an onboard Wi-Fi network.

What they didn’t know was that ‘Delta WiFi Fast’ was actually a fake network, allegedly set up by a fellow passenger intended to mimic the actual onboard Wi-Fi network and scam other users.

The unknown passenger was able to disable the legitimate Wi-Fi networks for 30 minutes while they launched the attack, and in doing so, may have violated United States federal law.

According to Aircraft Communications Addressing and Reporting System (ACARS) messages, the situation was first brought to light by the crew of the flight, who shared the following message:

“HEY ALERT CORP SECURITY WE HAVE A PAX [passenger] ON THAT HAS CREATED A SCAM WIFI CALLED DELTA WIFI FAST WE BELIEVE THEY ARE TRYING TO SCAM THE OTH PAX”

“NO INFO AS OF NOW WE HAVE A BUNCH OF PAX THAT WERE AT A CYBER CONFRENCE IN LAS THE WERE ABLE TO JAM OUR WIFI AND BRODCAST THERE SIGNIAL”

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The actual details of what happened on the flight outside of these messages isn’t clear, but according to Monika Hathaway, head of press for DEF CON, similar attacks happened in Las Vegas: “Our conference this year also suffered from multiple similar ‘deauthorization’ Wi-Fi attacks and it impacted some of our operations.”

Delta airlines confirmed that no aircraft operating systems were affected and flight safety was never in question.

Wi-Fi deauthorization attacks can be launched with cheap, widely available ‘deauth boards’ which are small, battery powered devices that send deauthentication frames to devices within their range. On board a plane, these could easily reach most devices.

Once the legitimate Wi-Fi has been jammed and the other users booted from the network, the attacker can then set up an ‘evil twin’ network that users will attempt to connect to, which can be used to snoop on their internet traffic, steal credentials, and perform other malicious activities.

Aras Nazarovas, Senior Information Security Researcher at Cybernews:

An evil twin attack is when hackers create fake Wi-Fi networks with the goal of stealing sensitive information from people, or exploiting known vulnerabilities present on victim devices. The fake networks often have a very similar (or identical) name to the legitimate network, which was the case here.

Source: Read the original article on www.techradar.com