I use an external HD as my backup drive, I backup once a week and i backup everything. I have an external HD just for backing up, nothing else, i use another one for storing video/music. My question is simple, how can i have some kind of security on my external HD. Anyone can come and pick it up and hook it to another mac/pc and see what i have one it. How can i backup to an external HD and have some kind of security. Thanks.