The greatest ocean depth measured is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km 2 /yr.
BitLocker uses an AES encryption algorithm with a 128-bit key or 256-bit key to encrypt disk volumes. It protects the data when a hard drive is stolen and is being used on another computer or when someone has physical access to the drive. To access the drive in an offline mode, BitLocker requires a recovery key. BitLocker is generally aimed toward individual users who may fall prey to computer/laptop theft.
Encrypting Everything. Full-disk encryption protects everything on a hard drive--even if the drive departs in someone else's pocket. BitLocker, a utility built in to Vista Enterprise and Vista Ultimate, provides such protection. You'll find it in the Windows Security Control Panel. Other Windows users--and Mac and Linux aficionados--have options as well. TrueCrypt is a free, easy-to-use open-source encryption product maintained by an active development community. If you feel more comfortable working with commercially supported, full-featured software, consider PGP Desktop ($99).For encrypting USB thumb drives, Windows users can nab the free Rohos Mini Drive download.