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Three days before the rickroll, with most of the setup prepared, the group had a breakthrough. “I would record a video to test if the projector displayed the stream correctly,” he says, posting a video of the setup.
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Duong says he would remotely connect to one PC in the school’s computer lab, which he remotely accessed through the computer club. He tested the streaming setup at night, so as not to disrupt classes. During the month before the Big Rick, the group sent the script to each of the media players in several batches, reducing the chances of school admins detecting them. Instead, he created a script to act as a payload, which could be uploaded to each receiver ahead of the rickroll. That’s going to make things very detectable.” “That’s going to generate a lot of traffic. “Every time you make a request, it’s going to send a lot of requests to all the projectors,” Duong explains.
However, Duong decided sending out the rickroll using the servers would be too risky. The system has receivers that directly connect to projectors and displays, encoders that broadcast video, and servers that allow products to be managed centrally by administrators. That’s when he decided to do the rickroll, which he says he picked because teachers would likely get the joke.ĭuong and his three friends managed to get some access to the projectors and TVs using default usernames and passwords, which hadn’t been changed. When the pandemic struck, Duong says, he mostly forgot about the access to the systems, which he had scanned years earlier, and the school didn’t go back to in-person learning until the end of his senior year. Next, he had access to the school’s IPTV system, which controls hundreds of projectors and TVs across the district.
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They used the software to run scans and exploit the systems while making them appear as if they were in one of the district’s other schools. First, he acquired a teacher’s version of LanSchool, a “classroom management” software that can track everything students do, including monitor students’ screens and log keystrokes. The Big Rick involved three key components, two of which were originally accessed in Duong’s early high school years. As the countdown hit zero, a grainy, gyrating Rick Astley burst into the first notes of “Never Gonna Give You Up.”
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Duong sat pouring over his laptop, chatting with three other friends-Shapes, Jimmy, and Green-on encrypted messenger Element, making sure the last of his custom code executed correctly. Tucked in the corner of one classroom was Minh Duong, a senior on the verge of graduating. In classrooms and hallways, more than 500 screens displayed the countdown. The group speculated that it could be a message from President Joe Biden, failing that, “big brother.” The same scene was repeating itself across dozens of classrooms in Illinois’ school district 214-home to 12,000 students. “They overtook our projector,” the teacher, caught on video, told students. A five-minute timer, counting down to zero, sat under the ominous message.Ī teacher in one classroom tried to turn the projector off using the infrared remote, but it was useless. “Please standby for an important announcement,” read a message that flashed up on the displays. Projectors that were already on automatically switched to the HDMI input.
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At 10:55 am on April 30, 2021, all the TV screens and classroom projectors at six schools in Cook County, Illinois, started controlling themselves.
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