Which of the following is the BEST method for preventing the leakage of confidential information in a laptop computer?

A. Encrypt the hard disk with the owners public key.

B. Enable the boot password (hardware-based password).

C. Use a biometric authentication device.

D. Use two-factor authentication to logon to the notebook.

Explanation:

Only encryption of the data with a secure key will prevent the loss of confidential information. In such a case, confidential information can be accessed only with knowledge of the owners private key, which should never be shared. Choices B, C and D deal with authentication and not with confidentiality of information. An individual can remove the hard drive from the secured laptop and install it on an unsecured computer, gaining access to the data.