If you have any suggestion about it, let me know. Meanwhile it seems that once you have sensitive data on USB, you can never sell it - must destroy it unless you create a 256 bit encryption using truecrypt right from the start. One thing I don't get is how can USB drives retain the old data even...
nothing can fully prevent data compromise in case we keep it on paper or on any other storage media.
so encryption would be adviceable when you want to store data as a hard or softcopy.
it will provide an extra challenge to those who want to intercept some of your information