Hi Jess
I have the same issue as Greg, we had penetration tests done and they 
found a list of apache vulnerabilities as they always do, this is because 
we have an outward facing apache for internet access to Windchill
So I think the issue isn't Windchill use but that apache could be 
compromised..  However, having said this could you expand on your comment 
"One thing to note about Apache security issues -- most of them don't 
apply to Windchill's usage of Apache" this sounds interesting
Cheers
Best Regards
Chris Collinson
CAD Administrator