Physical Access Required!
Roger Halbheer, shared a Microsoft Vista hack video. It is worth watching video but as Roger said, if you switch on Bitlocker, you are safe from this type of hacks. In my opinion, If hacker or bad guy have physical access then nothing is secure. They will try to do all nifty things.
Roger, also mentioned 10 Immutable Laws of Security, which is worth reading as well.