Your comments

Interesting...

I went back and checked the N360 history log. There is no mention of "Unauthorized access blocked " for SystemExplorerService anymore.
The only explanation I came up with would be that N360 actually changed how they handle the "tamper protection" in respect to services requesting the read access to process data. I do not see anything confirming this theory on Symantec's forums but there has been a lot of posts complaining about false "tamper" hits with different products so maybe Norton "fixed" it?

I will monitor the N360 logs and let you know.
Thanks for checking,
Greg