But they haven't done that yet, maybe they're scared. That's good news
Conficker virus still at large Jan 20, 2009
Sony doesn't do any of its own development in this area; it looks like a Chinese company did it
Sony USB drive files could aid hackers Aug 29, 2007
Basically this means that Sony has been hacked, again. Although in this case the server is probably not very important
Sony servers hacked again May 20, 2011
Certainly the most significant change has been the evolution of virus writing hobbyists into criminally operated gangs bent on financial gain
Happy 20th birthday to the computer virus Jan 19, 2006
At the personal level, I think Sony is doing stunts like this because they're worried about the market share within mobile devices
Security firms react to rootkit Nov 17, 2005