Stolen NASA Laptop Had Space Station Control Code
astroengine writes "NASA had 5,408 computer security lapses in 2010 and 2011, including the March 2011 loss of a laptop computer that contained algorithms used to command and control the International Space Station, the agency's inspector general told Congress Wednesday. According to his statement (PDF), 'These incidents spanned a wide continuum from individuals testing their skill to break into NASA systems, to well-organized criminal enterprises hacking for profit, to intrusions that may have been sponsored by foreign intelligence services seeking to further their countries’ objectives.'"
Regardless, I don't think that algorithms that control the ISS are of any value to anyone. Hacking the ISS or even crashing it would receive international condemnation from everyone, even countries that normally don't agree with each other.