Method for preventing malicious software from execution within a computer system

A computer usable medium having a computer program product for preventing malicious software from execution within a computer system, said computer usable medium comprising:

• program code means for performing a permutation on a subset of instructions within an application program to yield a permuted sequence of instructions before any actual execution of said application program on said computer system;
• program code means for storing a permutation sequence number of said permuted sequence of instructions in a permuted instruction pointer table;
• and
• program code means for executing said permuted sequence of instructions in an execution module that is capable of translating said permuted sequence of instructions to an actual machine code of a process within said computer system according to said permutation sequence number of said permuted sequence of instructions stored in said permuted instruction pointer table.

A computer system capable of preventing malicious software from being executed, said computer system comprising:

• a transformation module for performing a permutation on a subset of instructions within an application program to yield a permuted sequence of instructions before any actual execution of said application program on said computer system;
• a permuted instruction pointer table for storing a permutation sequence number of said permuted sequence of instructions;
• and
• an execution module for executing said permuted sequence of instructions, wherein said execution module is capable of translating said permuted sequence of instructions to an actual machine code of a processor within said computer system according to said permutation sequence number of said permuted sequence of instructions stored in said permuted instruction pointer table.