we can now predict the threshold to be used for intrusion although the present invention and its advantages have been described in detail it should be understood that the present invention is not limited to or defined by what is shown or discussed herein for example any digital computer systems can be configured or otherwise programmed to implement the methods and apparatuses disclosed herein and to the extent that a particular digital computer system is configured to implement the methods and apparatuses of this invention it is within the scope and spirit of the present invention once a digital computer system is programmed to perform particular functions pursuant to computer executable instructions from program software that implements the present invention it in effect becomes a special purpose computer particular to the present invention the techniques necessary to achieve this are well known to those skilled in the art and thus are not further described herein computer executable instructions implementing the methods and techniques of the present invention can be distributed to users on a computer readable medium and are often copied onto a hard disk or other storage medium when such a program of instructions is to be executed it is usually loaded into the random access memory of the computer thereby configuring the computer to act in accordance with the techniques disclosed herein all.