AVERT Labs (McAfee) has highlighted an increase in malware dangers associated with infected USB based media. Be careful of any device you plug into your PC and ensure it is first free of viruses (especially if others use and plug devices into your system)
QUOTE: Over the years, floppy disks have since been replaced by thumb drives, portable hard drives, flash media cards and other forms of removable data storage. These removable devices of today can hold 10,000 times more data than yesteryears floppy disks. Not only can they store more data, today’s removal storage devices are smart with the ability to run portable software programs or boot an entire operating system.
Given the popularity of removable storage media, virus authors were quick to realize the potential of using this as an infection vector. And they are greatly aided by a convenience feature in operating systems called “AutoPlay” that exists to automagically launch the content in a removable disk without any user interaction.
QUOTE: Under sustained attack from what is described as a rapidly spreading network worm, the U.S. army has banned the use of USB sticks, CDs, flash media cards, and all other removable data storage devices