Having worked with Joomla, I found it to be a monstrous headache, especially in regards to russian hackers, but most of the problems centered around the community memberships, which the non-profit will not do. No Forums, etc.
I am just wondering how complex the security issues are for CMSMS? I will not want to be having to manage the site constantly, looking for breeches... e.g.... So for the basic admin controlled set up, and perhaps a blog and photo gallery that they will do in house... Should I be worried? Or is it fairly secure and simple

Thanks
Jeff