I think the general consensus is that all systems are only as good as the sysadmin... some server software is inherently more secure than others out of the box but its the skill and intelligence of the sysadmin who makes the difference.

I deliberately use the word intelligence rather than knowledge. Intelligence is how you use your knowledge, no one, no matter how huge in the ego department is omniscient. It's entirely down to how you use the resources available to you, this site being one of those resources

MrC