NASA has been hit repeatedly by hackers during the last two years including an incident where attackers compromised systems at the agency s Jet Propulsion Laboratory. The situation was revealed in testimony Feb. 29 by NASA Inspector General Paul Martin before the House Science, Space and Technology subcommittee. In fiscal year 2011, the agency was targeted with 47 attacks he called advanced persistent threats (APTs), of which 13 were successful at compromising agency systems. Martin also revealed that a notebook computer stolen in March 2011 resulted in the loss of algorithms used to control the International Space Station.
Source: https://threatpost.com/nasa-computers-hacked-repeatedly-last-two-years-030312/76279/