In terms of numbers, the figures are staggering. The size of the digital universe for
2007 reached 281 billion gigabytes, or, 281 exabytes. This works out to be about 45GB of digital information per person on the planet. And, considering the lack of information for some of the third world countries, one can only imagine how much those of us reading this article will have under their belts.

Furthermore, the amount of information about us that is generated automatically on a pretty much daily basis outweighs the total volume of information that we create about ourselves. Naturally this has large security implications that the IT sector will have to address more and more as time passes.