The NASA Terra Earth orbiter was successfully attacked in 2007/8 — http://resources.infosecinstitute.com/hacking-satellite-look-up-to-the-sky/ http://resources.

The NASA Terra Earth orbiter was successfully attacked in 2007/8 — http://resources.infosecinstitute.com/hacking-satellite-look-up-to-the-sky/ http://resources.infosecinstitute.com/hacking-satellite-look... “The best known of alleged takeovers of satellite control occurred in 2007 and 2008. In particular, a serious attack was observed in 2008 when hackers obtained the control of the NASA Terra EOS earth observation system satellite for 2 minutes in June and for another 9 minutes in October. Fortunately the attackers didn’t damage the satellite during the time they gained control of it.”