The BlackBerry PlayBook has a couple of options that let you manage and secure both wired and wireless tablet file-sharing via USB and Wi-Fi. If you don't plan on sharing files between your PC and tablet, or between your tablet and other wirelessly-enable device, your best bet, from a security perspective is to simply leave both of these options turned off--both file sharing options are turned off by default until you enable them.

But you can still securely share files via PlayBook and other devices by assigning a file-sharing password that must be entered every time you want to share files. To enable wired- or wireless-file-sharing, or both, open up your PlayBook Settings and choose the Storage and Sharing option. On the next page, enable wired file sharing by clicking the box next to File Sharing to the On position. Do the same for the Wi-Fi Sharing listing if you wish to enable wireless file sharing.

Finally, to secure BlackBerry PlayBook file sharing, enable the Password Protect option on the Storage and Sharing screen, enter in your password twice to confirm it, and you're good to go. With the file-sharing password enabled, you'll need to enter in your access code before transferring files to and from your BlackBerry PlayBook.