For the singular entrepreneur, consultant or home accountant/mother-of-two, encrypting a computer hard drive is likely protection enough in case the machine is taken. Unless the thief thinks there is something very very valuable hidden on that drive, it will likely get reformatted, for uh, resale.
For big companies, however, encryption alone isn’t enough – the issues are much more complex. You have to know where the data comes in and out of the organization, how it is stored, how much is stored, and where it is stored.
It might also be nice to have employees that don’t leave valuable data in the backseats of cars……ok, I’ll won’t harp on the laptop thing anymore this week.