I'm a font-end developer and designer and I have been tasked to find the best CMS for our cyber security company. The security of the site is very important since we sell security, but we're also looking for a CMS that will allow me to build my own template, and edit the CSS within the system. We also want it to provide a WYSIWYG interface for quick changes, or for marketing folks to use. I don't feel like Wordpress is an option based on security, but let me know if that's an inaccurate assumption. I'm open to any suggestions.