Data are encrypted so security is enhanced:
http://www.safehousesoftware.com/Default.aspx
other related blog articles:
Hacker - Truecrypt alternatives
USB - Some free encrypting tools
Hacker - How you can crypt data before to store them in the cloud
USB - FREE super-strong 256-bit encryption PORTABLE software for any hard drive or USB Flash memory stick
Programs - Bitlocker how to implement in your organization
Server - BitLocker: Planning and Policies
