Importance

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Abstract

A computer has an operating system having a kernel. The operating system is configured to prevent running of software not identified in a list of approved software referred to as a white list. The computer is linked by a communications link to a server which has a comparison program which compares the identities of software present on the computer with software identified in the list to determine what software installed on the computer is not on the white list. A risk determination program determines for each software not on the list whether the software complies with a plurality of risk criteria, and automatically adds to the list the identity of any software determined to be of low risk according to a risk calculation. The list is supplied to the computer. Software absent from the list is prevented from running by the kernel of the operating system.

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First Claim