* disable the Autoplay on all drives on your PC. To do this follow 1,2,3 –
1. Go to start> run> type gpedit.msc
2. Select ‘computer configuration’ from the left tree and then go to ->’administrative tempates’->’system’.
3. In the right panel look for ‘Turn off Autoplay’, Double click on it and Select ‘enabled’ and then select 'all drives'.
This will disable the auto-play of pen drive when you insert it in the PC. Most viruses attach them with the auto-play program and run automatically unknowingly. So the above steps make you little closure to the secure data transfer to your PC.
Last but not least, you should have an updated antivirus guarding your PC all time.