A study into the feasibility of hacking low-Earth orbit satellites has revealed that it's worryingly easy to do.

In a presentation at the Black Hat security conference in Las Vegas, Johannes Willbold, a PhD student at Germany's Ruhr University Bochum, explained he had been investigating the security of satellites. He studied three types of orbital machinery and found that many were utterly defenseless against remote takeover because they lack the most basic security systems.