These dream USB devices are proving an absolute nightmare for IT managers as they struggle to ensure the security of the data they carry. A standard DVD-data-sized (4GB) key fob USB drive can be bought online for less than £10 and from high-street retailers for little more. Coupled with the fact that a growing number of mobile phones and MP3 players are now starting to reach this level of storage capacity - and come with standard or mini-USB connectors, and you begin to understand the scale of the informatio security problem.