We notice that some of the Windows Snow agent binaries but certainly not all are signed. Which given the fact the Snow agent service is running with the highest privilege (local system) is posing a security risk if someone is tampering the binaries...
We also notice signing differences for the different agent versions which is strange anyway:
Snow Windows 3.7.05 signing issues
Snow Windows 5.3.0 signing issues
Snow Windows 6.0.2 signing issues
I created a Snow Support ticket for this too and the answer is: The Snow Inventory Agent version 5.x & 6.x are not signed per default, but is something that can be done on a request basis.