Protection fromTrojan spying
TrueCrypt 5.0a, BitLocker (found only on Vista Ultimate) To encrypt your hard disk when running XP, use TrueCrypt 5. It encrypts the hard disk in the background, while you work.
After which TrueCrypt prompts you for your password, just before the Windows startup (Pre Boot Authentication). To encrypt the system partition choose 'System I Encrypt System partition/drive' in the tool bar. Activate' Encrypt the Windows system partition I Single Boot'. We recommend 'AESTwofishSerpent' as the encryption algorithm.
Vista users will not be able to use TrueCrypt, but those who run the Ultimate edition can use BitLocker, its own device encryption, which you can download at the 'Welcome Center' under 'Vista Ultimate Extras'. If your PC has a TPM chip (Trusted Platform Module), you can encrypt your hard disk immediately,
in which you can choose the relevant function with a right click at the System hard disk. Without a TPM chip, use the search engine. Go to 'Start' and type in 'gpedit.msc'. Then, choose 'Computer configuration I Administrative pattern I Windows components I Bit Locker device encryption' in the window 'Group code object Editor'. Now double click on 'System control setup: activate more start options' on the right half of the window and choose 'Activate I Allow Bit Locker without compatible TPM'. Now plug in a USB stick to save the start code and close the wizard.