![]() "The other big thing that makes space systems different is that they're always under a degree of environmental attack that we're not really accustomed to," he added. "They can all become attack surfaces that an attacker might target," Pavur said. These pathways, however, also give miscreants more opportunities to gain access to, and ultimately compromise, a satellite. "So your risk tolerance is very low for losing access to communications to the device."īecause of this, space systems are built in a risk-averse way, and employ redundancy to provide multiple communication pathways to recover a system if it fails, or to debug equipment that's malfunctioning. "The most obvious is you can't just go up there and reboot them," he said. There are a couple of things that make securing space systems unique, he explained. are always under a degree of environmental attack that we're not really accustomed to "It's a lot of really deep mathematics on the physics side of things, and it requires a lot of expertise in embedded systems and reverse engineering." The qualification round included "wicked-hard astrodynamics problems related to overall mechanics and positioning, figuring out where objects in space will be, and where they are going," he told The Register. Pavur participated in the qualification round for this year's satellite hacking competition, though didn't make it to the finals. You also might remember him from his exploitation of GDPR requests talk at Black Hat, where a boring Polish airport delay inspired a delve into serious issues with the application of the European legislation. He describes himself as a "passionate security researcher" when it comes to poking holes in satellites, and did his PhD thesis at Oxford on securing these kinds of systems. James Pavur, lead cybersecurity software engineer at Istari, participated in the three earlier Hack-A-Sat competitions, and gave a talk on radio frequency attacks in outer space at last year's DEF CON. The top three teams will win a monetary price: $50,000 for first place, $30,000 for second, and $20,000 for third. ![]() This year's annual competition will thus be the first time conference hackers get to test their skills against a live, in-orbit satellite. ![]()
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