Abstract: The data security system uses a volatile key apparatus to create and manage a master file, comprising a single encrypted file that is stored on the hard drive of the computer system. The master file contains all of the passwords, cryptokeys and security codes that are used by conventional security programs and apparatus resident on the computer system to safeguard the confidential data that is contained in the memory of the computer system. The master key that is used to encrypt and decrypt this master file is stored in the volatile key apparatus, which is a piece of hardware located in the personal computer and directly connected to the system bus. When a violation of the system security procedures is detected, the master key is erased from the volatile key apparatus, thereby preventing access to the encrypted information that is stored on the hard drive.

Abstract: The personal computer security apparatus of the present invention provides a security architecture embedded within the personal computer itself to provide a practical level of security to thereby discourage theft of the personal computer. Apparatus are provided to monitor the continuity of the connection to the telephone line to which the personal computer is connected. Loss of voltage continuity on the telephone line for greater than a predetermined period of time is indicative of an individual unplugging the personal computer from the phone jack in order to enable the person to move the personal computer. Motion sensor switches are optionally provided to detect physical movement of the personal computer in excess of a predetermined minimum allowable range of motion. The apparatus generates an audible alarm in response to the detection of a person's attempt to relocate the personal computer without properly disabling the security software via the keyboard.