Australia's 'professional question asker', George Negus, talks about politics and his new book, The World From Down Under

Jeff Liedel is as much a car guy as he is a computer guy. That much becomes clear when he's discussing his 20-year career track and the businesses he's served: Ford, Covisint, GM and now OnStar, the in-vehicle communications company and GM subsidiary, where he is CIO.

It's become an all-too-common scam: A legitimate Web site pops up a window that looks just like a real security warning. It says there's something wrong with the computer, and click here to fix it. A few clicks later, the victim is paying out US$40 for some bogus software, called rogue antivirus.