What is evidence in CAS?
When you want to execute any code in your environment you would first like to know from where the code came from. Depending from where it came from, you would then would like to give him access rights. For instance a code compiled from your own computer would have greater rights than code downloaded from the internet. In order to know the same we need to probe the assembly / exe / dll and get evidences like who is the publisher of the code , from which site has this code from , from which zone has it come from ( internet , intranet etc) etc.
