Patent ID: 7139759

Claim:
A computer network system including a plurality of computers, each including communication means for communicating, comprising: a first computer, said first computer comprising means for transmitting moving type security software held by said first computer to one of said plurality of computers; a second computer, said second computer comprising fixed type security software, the fixed type security software including: means for receiving said moving type security software from said first computer, means for storing said moving type security software, means for executing said moving type security software, means for creating a copy of said moving type security software, and means for transmitting the created copy of the moving type security software to one of said plurality of computers; and a third computer comprising said fixed type security software, the fixed type security software including: means for receiving said moving type security software from said second computer, means for storing said moving type security software, means for executing said moving type security software, and means for creating a copy of said moving type security software; and wherein the moving type security software secures safety of at least one of said second and third computers.