I have one question about USB Device(Pen Drive,External Hard Drive or other external device) security.
Well we all know that this often happen that we plug our pen drive in virus infected laptop or PC and our pen drive get infected with autorun virus. then we plug it in our computer and then scan it and remove virus.
So i want to know that if it's possible that when we plug it in virus infected PC then some kind of tools should run and stop being affected by autorun virus?
I know that there are many portable antivirus and Pendrive locker and some autorun stopper.
But we have to execute it from pendrive and they are not so good if virus definition is not in its database of that tools. and also if it automatically execute then it scan for PC.
I want a tool that execute on plug in and it allows only the writing of data when we copy or paste something.. in sort no hidden autorun execution file should copied in pendrive.
Pendrive locker is their which only allow writing data after password.. but it doesn't stop autorun files being written automatically on pendrive.

A U3 drive might be able to do that. You'd have to get the virtual disk to run before the flash drive mounts and I'm not sure if that's possible.
Or carrying 2 flash drives. It'd be like U3 but there's no chance of the other drive mounting first. The first one has anti-infection and the second one has your data. Make the first one read-only if you can (use a U3, leave the rest of the drive blank), run the program, then plug in your other drive.

This tip is more helpful than any software.


http://www.gohacking.com/2011/02/how-to-write-protect-your-usb-flash-drive.html