![]() ![]() Wixey also showed off a wide array of other hacks including a tool he developed called Spectregram, where near-ultrasonic sound waves (16-20KhZ) that contain hidden pictures and/or messages can be shared wirelessly, and sometimes at too high of a pitch for most people to hear. A slide from Wixey’s presentation at DEFCON 25 Now the device, which grew approximately 10 times in size and exponentially more so in power, could sit effectively, say, on top of your house or car, and ward off drones which fly within its signal. He wanted the device to take down all drones in any direction, not just those that flew directly over-head…Thus, he built this: Wixey’s cluster of ultrasonic transducers attached to an experimental colanderĭozens of ultrasonic transducers mounted to a colander with two arduinos underneath. Wixey decided to take the drone-devastating hobby project even further. Ultrasonic hacking is difficult to detect, leaves little trace, and is at low cost, which will likely be cause for concern in the coming years within the tech, auto, and security industry.īut this wasn’t enough. The drones are affected because many have ultrasonic altimeters, similar to how autonomous cars see and avoid obstacles. After a moment, the drone suffered from a total control failure causing its propellers to stop midair and ending in it comically crashing to the floor because of the effects of the ultrasonic attack. He showed on camera that he no longer had control over the direction the drone flew. An early iteration of the hobby project made it so when the drone flew directly over an “animal repellent alarm” with the ultrasonic waves pointed directly up toward the ceiling, the drone would immediately accelerate upwards in altitude uncontrollably. Wixey filmed a couple versions of the device as he tested it against the drone in his living room. One device he crafted, used ultrasonic sound waves to disrupt a drone, and render the controller that the pilot uses to move the drone around in the air useless. A disclaimer on his projected slides, displayed through-out the enormous ballroom in Caesar’s Palace, read: “All content is for educational purposes only.” 0-50Khz ultrasonic animal repellent alarm Of course, everything he hacked was something he owned, or had explicit consent to hack. During the talk, he detailed some very interesting techniques, often involving hand-made devices, of sending and receiving, jamming other systems, and trolling his friends in unexpected ways and without internet! Many of the slides and video demonstrations of these devices drew frequent applause and amusement from the crowd. One specific presentation caught our eye, called “See No Evil, Hear No Evil: Hacking Invisibly and Silently with Light and Sound”, presented by Matt Wixey. Presentations range from preserving internet freedom, to social engineering (aka human hacking), and even more dubious subjects such as hacking drones. ![]() Over the four day convention, DEFCON will host speakers from around the world and present demonstrations on the latest and greatest hacks and security vulnerabilities. Las Vegas, NV – Unicorn Riot journalists are currently reporting from DEFCON 25 in Las Vegas, where hackers of all flavors come together to present the most cutting edge in a long list of hacking skills. ![]()
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