If I was doing this, I'd just modify WordPress or another CMS that I like, just because of course, it will likely be damn secure. Saying that, if you know what you're doing then coding your own CMS is quite a good idea, just make sure you keep it open source if you want it to remain secure .
I need some help with making a CMS system, I tried following the instructions at some blog I found: it failed.I really want to be able to hand code it (or copy and past ) because I want to customize it EXACTLY to what I want/need.Basically I need a CMS system that can add web pages into sections and have a basic user/group management with a PMS system as well and article comments. While keeping the admin area personalised as well.I would also like it to integrate into a forum system (hand coded).This is mainly because I want it to look exactly how I want it and work exactly how I want it.PHP5, MySQL, XHTML 1.0 Strict.
I finished at this lads age and I intend on using this forum.