MrSeb writes "NASA's Curiosity rover has now been on the surface of Mars for just over a week. It hasn't moved an inch after landing, instead focusing on orienting itself (and NASA's scientists) by taking instrument readings and snapping images of its surroundings. The first beautiful full-color images of Gale Crater are starting to trickle in, and NASA has already picked out some interesting rock formations that it will investigate further in the next few days. Over the weekend and continuing throughout today, however, Curiosity is attempting something very risky indeed: A firmware upgrade. This got me thinking: If NASA can transmit new software to a Mars rover that's hundreds of millions of miles away... why can't a hacker do the same thing? In short, there's no reason a hacker couldn't take control of Curiosity, or lock NASA out. All you would need is your own massive 230-foot dish antenna and a 400-kilowatt transmitter — or, perhaps more realistically, you could hack into NASA's computer systems, which is exactly what Chinese hackers did 13 times in 2011."