Ok, so how does this happen? I mean you have NASA, the European Space Agency, Russia and I don’t know who else and you get a "low level virus" designed to steal passwords from online gamers?
If nothing else, it tells us to take no chances as this one appears to spread via copying onto removable media-ie USB keys.
Either way "NASA, meet AVG. AVG meet NASA". It just seems that if a virus is going to get on the ISS, it should at least be something exotic.